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My Posture Is Wrecked From Work. This Device Is Helping Undo the Damage
Hours of screen time lead to stiffness, pain, and brain fog. I tested the Chirp Wheel to see if it could help—and the results were surprising.
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I was leaving a blissful session with my massage therapist when she pointed out something unexpected: I was developing an ever-so-slight neck 'hump.' Of course, nobody wants to hear that—it sounds unsightly—but it also raised some alarm bells. Recently, an orthopedic spine surgeon told me that he's seen increasing cases of arthritis in young, healthy individuals, likely due to posture issues caused by constant screen use.
Like most desk workers, I spend at least 30 hours a week glued to my laptop or hunched over my phone. But I work out every day and had what I thought was decent posture—enough, I figured, to counteract some of the negative effects. Yet modern life seems to be conspiring against us. Even with regular breaks, prolonged screen time molds our bodies into less-than-ideal shapes—tight hip flexors, rounded shoulders, and a forward head tilt.
Determined to address this before it worsened, I found the Chirp Wheel XR, a rolling device for the spine designed to 'decompress the spin' and relieve tension. Reversing the Curse
I've always dabbled in stretching and yoga, but neither ever offered more than mild relief. Maybe with a little more patience and a little more time dedicated to my movement practice, I'd be cured.
But not all of us can afford an hour a day dedicated to stretching. So I started using the Chirp Wheel for 10 minutes a day, and I've tested multiple sizes (including a 4-inch diameter neck-specific model, and the 10-inch smooth wheel), but the one I keep going back to is the knobby 6-inch 'knot kneader.'
The device is simple: A wheel, perfectly circular, with a plastic core and firm rubber exterior that feels about as dense as a foam roller. Along the center, there's a groove where your spine lines up, so you don't feel pressure on the bony protrusions. (Chirp calls this the 'spinal canal'.) Along the edges, there are large circular nodules and smaller ones that dig into knots. The brand claims it mimics a shiatsu massage, which is debatable, but it certainly applies strong pressure.
Compared to Chirp's smooth wheels, which are padded with rubber and are apparently better for general stretching and chest opening, the knobby one delivers a deeper, more intense sensation. It's effective at hitting pressure points—like a lacrosse ball trigger-point massage, but much easier to use. Rolling Process
When you're sitting all day, your spine rounds forward into flexion. The Chirp Wheel encourages spinal extension, a position most people rarely experience unless they actively incorporate yoga poses like cat-cow or the conveniently named 'wheel' pose.
The key is easing into it—you don't want to jump into extreme extension too quickly. The first time I used it, I knew that my body was desperate for the help but it would take some time. The 10-inch wheel, marketed as the most gentle experience, was so difficult I could barely hold the position for 30 seconds.
Initially, I positioned it at my lower back and—so slowly, so gently—arched over it. My hips stayed on the floor, so I wasn't adding extra weight. I could barely drape myself over it, much less roll up or down. Every muscle in my body braced against the stretch.
The next day, I kept my hips grounded but slowly rolled the wheel along my spine by pushing into my feet. When I reached my upper back and traps—the muscles I hunch up to my ears when I'm typing—I had to ease off.
Each day, I added a little more pressure, rolling out for longer. Less than three weeks later, I can fully lift my hips off the floor and let my body weight rest—and actually relax—on the wheel. Now, I start with a full spine rollout, then move my arms overhead as I focus on my upper back. As I've loosened up, I've gotten small, satisfying pops as my back cracks.
You can also lay passively on the Chirp wheel, allowing all of the surrounding muscles to relax and getting a deep opening across the chest and front shoulders. A Few Small Downsides
While I've had a great experience with my Chirp wheel, some Reddit users have mentioned that the plastic has cracked under their weight. To lessen this risk, make sure the wheel is centered on your spine—it's easy for it to get off-kilter, which can create uneven pressure. The company claims the wheel supports up to 500 lbs (227 kg) and offers a one-year warranty if the core cracks.
Other tools, like foam rollers and massage guns, are more versatile than the Chirp—though I never experienced as much relief with either. This wheel is designed for the spine, and while you can use it to awkwardly massage the hamstring or calf, it's not ideal for much else. With a lacrosse ball or massage gun, you can pinpoint specific muscles in a way the Chirp can't.
But at $50 for the 6-inch wheel, it's cheaper than most recovery gadgets, and there's no motor to break or battery life to contend with. I saw results faster than with stretching alone, but it still took about a week of daily sessions to notice major improvements. Brain Fog Banished
It's been a month, but I'm not exaggerating when I say I can't imagine life without my Chirp wheel now. I use it during mid-day computer breaks, and it's the first thing I reach for when I get home from the gym. My daily comfort has improved, and my exercises are starting to feel much easier. When I took a recent Pilates class (which requires spinal mobility—not usually my forte), I no longer felt like the Tin Man. My spine felt flexy and my movements fluid. I felt more in control of my core.
The most surprising side effect? Eliminating my brain fog. I used to experience it almost daily—sometimes to a debilitating level where I'd need breathwork or a nap to regain focus. After a week on this thing, I was—and remain—brain fog-free. My best guess is that the brain fog was stemming from tight muscles in my neck and upper back, which could restrict blood flow and cause tension. There is currently no research directly linking tight muscles and brain fog, so this is just conjecture on my part. But for me, it's a pronounced effect, and I struggle to see it as a mere coincidence.
No single tool is going to fix years of poor posture overnight, but the Chirp Wheel has made a real difference. While sadly it's too early to know for sure if my dreaded hump has gone down, my upper back and neck are certainly more relaxed, my muscles have loosened up so they don't feel like rocks, and I'm much more aware of my posture throughout the day.
Moreover, using it throughout the work day makes me feel like I'm taking small steps to combat my tech neck. It's simple, effective, and—unlike the countless recovery tools I've tried before—something I actually want to keep using. If you too slump in your seat, it's definitely worth adding to your routine.

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WIRED
2 days ago
- WIRED
How to Prepare for a Climate Disaster in Trump's America
Jun 5, 2025 5:30 AM Here's how to find reliable information and keep safe during the summer heat and hurricane season following the unprecedented cuts at federal agencies. A brush fire in Southern California. Photograph:Forecasters within the National Oceanic and Atmospheric Administration (NOAA) predict this summer's hurricane season, which started June 1, will be 'above average' in terms of activity. NOAA's temperature outlook, meanwhile, also forecasts hotter-than-usual temperatures across the whole US this summer. But as climate change juices up severe storms and wildfires and makes heat waves even deadlier, cuts at all levels across the US federal government have thrown agencies tasked with preparing the country for disasters—and helping it recover—into chaos. These cuts are already having real impacts for Americans. As of mid-May, amid intense staffing losses at NOAA, four of the National Weather Service's 122 stations around the country no longer had enough personnel to keep an overnight shift going, while several other stations were considering stopping 24/7 forecasting operations. Historically, Federal Emergency Management Agency (FEMA) workers have gone door-to-door offering services to citizens in disaster areas, but as WIRED reported last month, the agency is discontinuing this practice this year. FEMA workers have told WIRED that they don't feel the agency is ready for disaster season. Being ready for a disaster has never been more important. WIRED spoke with experts to bring you a guide to how to prepare—and what to look out for. Listen to local authorities Regardless of what's unfolding at the federal level, local- and state-level emergency management departments or agencies are the ones who alert the public and lead the initial response before, during, and after a disaster. Many of these organizations offer text alert systems and post regular updates on social media. Local fire departments and police offices may also maintain social media pages or send out alerts in tandem with these agencies; law enforcement may also announce curfews or other rules during disasters. Follow any warnings from these agencies to shelter, evacuate, or take other actions to stay safe. If you're not sure where to start in terms of seeking information, FEMA maintains a searchable database of disaster resources by state, which includes state and local emergency management agencies. Calling 211 can also help connect you with service providers in your area. Local news organizations often amplify communications from emergency management officials. Local and state politicians—including governors' press offices—can also be a valuable source of information. Know what you need to shelter in place—and what you need to quickly evacuate The Red Cross recommends that people prepare a set of disaster supplies at home as well as a separate, smaller group of supplies in a bag to grab for a quick evacuation. At home, the organization recommends having two weeks' worth of shelf-stable food in case of an emergency. For adequate hydration, the CDC recommends a gallon of water per day for each member of the household for three days. (Don't forget food and water for your pets, too.) Take note of any medical needs in your household and try to keep a backup supply of medications on hand. Batteries, flashlights, a hand-crank or battery-powered radio, a first aid kit, and hygiene items should also make it into your home kit. In your go bag, FEMA recommends packing three days' worth of food and water, physical maps of local areas, a change of clothing, and copies of important documents. According to a checklist from the agency, these should include birth certificates, medical information, copies of your rental contract or home lease and insurance policies, car titles and registration, and banking information, sealed in a waterproof container or bag. Consider adding items specific to your climate or geographic setting (sunscreen for desert conditions or extra layers in colder areas) as well as items specific to your household needs (pet medications, diapers for a baby, etc.). Practice for emergencies 'Knowing your location first and what it could be at risk for is really going to help you prepare' for what could be coming, says Nicole Maul, a national spokesperson for the Red Cross. a FEMA-affiliated resource, currently maintains a list of hazards with safety pointers for each, while FEMA's National Risk Index allows you to see which hazards your county is most exposed to. Practicing emergency scenarios can mean anything from testing out a new hand-cranked radio, to mapping out different exit routes from your area in case main roads are impassable, to coordinating with friends and family about who to touch base with if something happens. Mariel Fonteyn, the director of US emergency response at the disaster-relief nonprofit Americares, recommends writing important phone numbers down on a piece of paper and preparing ahead of time for a scenario where communications might not work as usual. 'If networks are overwhelmed, phone calls won't go through, but text messages will eventually,' she says. 'Depending on what happens with the network, text messages outside of the damaged area tend to go through better. If you have family or a friend who lives in a different state, sometimes everybody messaging to that person will be better than trying to message to each other within the damaged area—if your family's kind of spread all over when a disaster occurs, have everyone know that you all message Grandma to let her know everything is OK.' In some cases, knowing how to safely handle emergency supplies and situations can be the difference between life or death. Fonteyn says that deaths from carbon monoxide poisoning are not uncommon following extended power outages, because of people improperly using generators they are unaccustomed to. 'If you have a generator, make sure that you fully know how to use it safely, and where to put it safely, so that it's not sending fumes into where you're staying,' she says. Never use them inside. Be prepared for how the political climate may affect federal responses after disasters After a disaster hits that's too big for a state to handle on its own, a governor can request a disaster declaration from the White House. This declaration enables FEMA to come to the affected area to coordinate recovery. The declaration also opens up a range of services for survivors, from federal money to help with grants to pay for temporary housing, legal assistance, repairs to homes, and relief from tax bills, as well as help for states to do everything from rebuilding infrastructure to restoring utilities like water and electricity. These declarations, however, can fall prey to political winds. In 2020, it was widely reported that President Donald Trump's personal conflict with Governor Jay Inslee of Washington prevented him from issuing a federal disaster declaration for the state in the wake of devastating wildfires in eastern Washington. Even political allies are now finding it difficult to secure aid: The White House initially denied a disaster declaration request from Arkansas in April following tornadoes and storms this spring, with Trump changing his mind only after a phone call with Governor Sarah Huckabee Sanders. And with the agency seemingly in turmoil as it enters disaster season—including, as WIRED reported, canceling its strategic plan before it had another in place—it remains to be seen how effective its response will be for approved declarations. FEMA keeps an active list of approved presidential disaster declarations on its website, with links to federal resources for survivors and instructions on how to apply for aid. Keep relying on weather forecasts—but find a trusted source to help interpret them Cuts to NOAA are hitting hard at the National Weather Service, the bedrock of weather forecasting in the United States, which has lost 600 employees since the start of the year. The NWS was already short-staffed before the start of this year, says Alan Gerard, a former director at NOAA's National Severe Storms Lab who left the agency in March. Forcing other offices to stretch to cover monitoring for those with fewer staff, he says, raises the chances of 'human error.' 'If we get into a situation where we have a number of hurricanes or tropical storms threatening the same area, and you have an office that's already depleted with staffing, you're basically increasing the burden on that office,' he says. (In early June, NOAA announced that it would hire back 100 Weather Service employees across the country—an effort Gerard says will take months of precious time during this hurricane season to actually implement.) 'It's not a situation where people need to be panicked that all of a sudden a Category 5 hurricane is just gonna appear and we're not gonna have had any inkling of it,' Gerard says. 'It's more of a situation of, OK, we can't fly as many reconnaissance missions into these hurricanes as we ordinarily do.' Gerard says people should still have confidence in NOAA's systems and its dedicated staff: 'The National Hurricane Center should still be your primary source for hurricane information.' The NWS allows users to sign up for text message alerts. But finding a trusted local meteorologist or weather analyst can help people understand gaps in forecasting or unclear data, in case some forecasts are less comprehensive than they were in the past. Understand your insurance and keep your documentation in order Navigating insurance—especially home insurance—is a headache even in normal times, especially as insurance rates are skyrocketing across the country. Part of making sure that your home is properly insured ahead of a disaster is understanding what, exactly, that insurance covers—and what it doesn't. Flood insurance, for instance, is sold separately from private home insurance, in a federal program run out of FEMA. Usually, only homeowners situated in specific flood zones are required to buy it, even though other regions can be vulnerable: Most people hit by Hurricane Helene in North Carolina last year did not have flood insurance. Land movement insurance—insuring against events like mudslides and earthquates—is not included in most homeowner policies, while condo building insurance usually only covers damages to the exterior of the building, not inside your apartment. Fonteyn recommends keeping photos of the interior of your home—including any expensive items—on your phone to use with your insurance provider or with FEMA's assistance programs. 'A lot of times, insurance and FEMA are looking to restore things to pre-disaster condition,' she says. 'You want to be able to prove the pre-disaster condition was good.' Don't forget about the dangers of heat A study published last year found that heat-related deaths have more than doubled in the US over the past 25 years. Yet extreme heat events have not traditionally been treated as federal disasters, meaning FEMA does not come in to help. During a heat wave, it's best to connect with local emergency management departments for guidance. Both and the CDC currently maintain resource pages with tips on how to prepare for and stay safe during extreme heat events. The CDC resource, however, comes from the CDC's Climate and Health program, which was gutted as part of mass firings at the agency in April. (We've linked to the archived version in case this resource is removed.) Think about your emotional needs—and keep community in mind Fonteyn recommends including activities—knitting, card games, favorite books, toys for children—in go bags. The immediate aftermath of a disaster—especially if you have to stay in an emergency shelter or hotel—can be challenging mentally. 'The hurricane doesn't hit and then a month later everything is back to normal,' she says. 'It takes a lot of time and requires a lot of patience. Ultimately, having these even basic comfort items can go such a long way in protecting your mental health after a disaster, so that you're able to better focus on all of the other needs that you have.' The Substance Abuse and Mental Health Services Administration (SAMHSA) maintains a free helpline for those experiencing mental health crises—although recent cuts at the agency have impacted the helpline's staff. The Red Cross also has a helpline specifically for those recovering from disasters needing emotional support. Above all, experts say that the best disaster plans often start with preparing the community around you. 'Check in with your family, check in with your neighbors, because those'll be the folks who you'll want to stay connected with in the event of an emergency,' says Maul.


WIRED
3 days ago
- WIRED
Adjustable Mattress vs. Adjustable Frame: Similar but Not the Same
Many people use these terms interchangeably, but they're totally separate products. Here's what you should be looking for if you're in the market. All products featured on WIRED are independently selected by our editors. However, we may receive compensation from retailers and/or from purchases of products through these links. One of my pet peeves as a professional mattress tester of over five years? Using the titles 'adjustable mattress' and 'adjustable frame' interchangeably when they are, in fact, different things altogether. It doesn't help that these products come up within the same search and are often labeled as the same thing—of course they're going to get mixed up. It's time to set the record straight and 'adjust' your understanding of all things adjustable mattresses. Under my wing you go to begin this journey. Adjustable Mattresses What is an adjustable mattress? Simply put, it's designed to let users modify how soft- or firm-feeling they want their bed to be. Adjustable beds don't follow the same layout as a normal mattress, because they involve internal air chambers that help you accomplish the firmness you're seeking. While a glorified air mattress may come to mind (and arguably, that is basically what it is), there is a lot involved in the material makeup here. To pump up these air chambers, there is so much tech, tubing, and incorporated programming by way of embedded computer chips and apps involved with an adjustable mattress. Hence, they aren't budget buys. Take Sleep Number, for example. While it isn't the only mattress capable of adjusting its own firmness, it is one of the priciest and most renowned given the incorporated apps, sleep tracking, and extra features, depending on the model you go for. For example, the Sleep Number Climate360 (5/10, WIRED Review) is nearly $10,000 and lets you also adjust temperature as well as firmness). Depending on the brand and model you choose, another common feature among adjustable mattresses is the ability to shift the top and bottom both up and down. Some models may not include this, depending on the brand and iteration, but it's also a driver of cost. This feature is where adjustable frames and mattresses are probably getting confused, as the bed is able to accomplish this range of motion only with the use of an adjustable frame. Adjustable Frames Many brands (like Sleep Number) will recommend you add an adjustable frame to your purchase so you can enjoy the full offerings of your new mattress. Other times, you can purchase an adjustable frame (also known as an adjustable base) to use with a regular bed-in-a-box mattress. In these cases, it's absolutely crucial that you confirm the mattress—whether it's memory foam or a hybrid—is able to work with an adjustable frame, lest you break the internal support system. The easiest way to verify is to reach out to a brand's customer service team to confirm whether the bed you're considering works with an adjustable frame. Never assume you're good to go right off the bat. But keep in mind that you will only be able to move the mattress to various angles, not adjust the overall firmness. Also, from experience, let's say you put a hybrid mattress that's approved to use on an adjustable frame—the popping of the pocketed coils within isn't the most pleasant noise to listen to. Or feel, for that matter. Stay Flexible To recap: You can use an adjustable mattress without an adjustable base. But if your mattress has the capability to move its head and foot in a vertical motion, and you're paying for this feature with the overall cost of the bed, are you truly enjoying the full offerings of the bed (and what you paid for)? Similarly, you can use an adjustable base with an approved mattress, but you'll only get the up-and-down motion and not the variety of firmnesses. Is it worth it to purchase both to use together? It depends, but if you have these options available to you with your bed, I'd say yes. That way, you can get the full enjoyment and offerings from both bed and base. Aside from the elevated (pun intended) price tags involved with adjustable mattresses and bases, there are some other downsides you need to consider. In my experience, getting adjustable mattresses and bases set up is quite cumbersome, as they're heavy and will involve extra cords and bits required for the electronic portions. The upside, though? Many people who have an adjustable bed, base, or both consider them to be absolute game changers, for situations like reading in bed, watching TV with your feet kicked up, or dealing with medical concerns like acid reflux. That's another angle to consider (I am on a roll with these puns and I will not be stopped!).


WIRED
3 days ago
- WIRED
Days-Long ‘Dark Retreats' Are the Newest Spiritual Conquest for Tech Elites
Jun 4, 2025 7:00 AM A crypto founder and celebrities like Aaron Rodgers and Tiffany Haddish have tried the pitch-black retreats, described as 'meditation on steroids.' Some see terrifying hallucinations. Courtesy of Sky Cave Retreats Just 12 hours after entering a pitch-black, 400-square-foot cabin dug into the hillside in southern Oregon, crypto founder Charles Hoskinson fled in terror. Hoskinson, 37, who created Cardano, the 10th biggest crypto coin—with a market cap of around $24 billion, set out to spend five days in complete darkness at the Sky Cave center 'to gain a deeper understanding of myself and the world,' he told his million followers on X in early January, a couple of days before going in. But he cut his journey inward short after suffering from 'terrifying shadows gnawing at my soul, sleep paralysis demons, and [an] inability to breathe,' he posted, equating the grueling overnight experience with a cult horror movie. 'Much wisdom gained, but I need a few days off at the ranch since starring in The Ring wasn't on my 2025 bucket list.' Hoskinson declined to speak to WIRED for this article, but Sky Cave founder Scott Berman confirmed his attendance. Hoskinson is not the only tech elite seeking spiritual enlightenment in the dark. Darkness retreats remain niche, but they have become the latest extreme spiritual practice for founders, athletes, influencers, psychonauts, and yogis to attempt traversing and later flex about. Typically, a darkness retreat consists of several days alone in a room in complete darkness and silence. Participants are delivered three meals through a hatch that maintains the darkness in their dwellings, which also each contain a bed, bath, and flushing toilet. They can leave simply by opening the door, and they can also break their silence to chat with the facilitators at two intervals throughout the day when they come to the door to check on them and bring the food. Electronic items like phones or tablets are not allowed inside dark rooms, making it perhaps the ultimate dopamine fast. Imagine a meditation retreat, but alone, in the dark. 'It's meditation on steroids,' says Andrew Holecek, an author and lucid dreaming teacher. This might partially explain why short-on-time celebrities are embracing it. Four-time NFL MVP Aaron Rodgers has spent four days in the dark, as has comedian Tiffany Haddish, while NBA star Rudy Gobert and decorated former baller Dwight Howard did three days each. 'It was the best thing I ever did,' Howard wrote afterward. 'Life just feels simple again.' But the possible benefits are in direct proportion to the risks, Holecek warns. 'You can go to incredible depths really quickly. This is where the promise and the peril lies.' Courtesy of Sky Cave Retreats While retreats offering people voluntary isolation in the dark are relatively few, the practice has ancient roots. The Buddha is said to have meditated in a dark cave for long periods before gaining enlightenment. The prophet Muhammad was isolating in a cave when legend says an angel dictated the first verses of the Quran to him. When Abraham, the founder of Judaism, followed a calf into a cave, it was there that he is believed to have found the entrance to the Garden of Eden. Even today, infants identified as future shamans in Colombia's Indigenous Kogi community are sent into the relative dark for extended periods to access altered states of consciousness. 'In the practice of darkness, people have to learn to spend time on themselves,' says Taoist master and dark retreat facilitator Mantak Chia, who published a 2002 manual titled Darkness Technology . 'There is nobody to talk to, nothing to see. They have to turn inwardly into their body. I guide them into the calm and let the body's healing energy activate.' Chia ran darkness retreats in the US in the 1980s, making him one of the modern pioneers in spreading the practice. The darkness, according to Chia, who facilitates group darkness retreats in Thailand, is the ultimate setting 'to let go, and forgive and forget.' People are typically drawn to darkness retreats because they wish either to go into a state of deep inquiry, simply unplug, deepen their meditation practice, or explore altered states, according to Berman. Others, it seems, want to conquer a gargantuan challenge—facing off with humanity's most primal fear, harking back to a primordial prefire age when predators circled vulnerable early humans during the night. Facilitators say that the first day or two, flush with all the darkness-induced overproduction of melatonin, is often of deep rest—if one can remain blissfully asleep without any sleep paralysis demons disturbing them. The initial sensations of the darkness could feel akin to taking a sedative drug. Then, comes the introspection, interspersed with periods of discomfort, angst, or serene enjoyment. And, around day three, hints of psychedelic visuals, even with the eyes open, and a feeling not dissimilar from the final stages of a DMT trip. Some studies report that sensory deprivation environments can induce troubling hallucinations and paranoia, as with other altered states. But Chia says the hallucinations are a hallmark of the beginning of 'enlightenment, because you see the light.' Courtesy of Sky Cave Retreats There are around five darkness retreat centers in the US, Berman says, with approximately 100 worldwide. Sky Cave has three dark rooms; four-night retreats cost $1,770, with an extra night to settle in and another to decompress afterward. The potential effects of prolonged darkness have not been studied well, but there are early indications to suggest that the practice may have a host of mental health benefits; a Czech center claims it can ease 'long-term fatigue and stress' through spurring the processing of inner experiences. When people come out of one of Sky Cave's three 'caves,' video footage shows some crying with emotion. But the process of subjecting oneself to solitary confinement in complete darkness also carries little-understood risks. 'To my knowledge there has as yet not been studies reporting on the negative outcomes of dark rooms for extended periods in naturalistic environments, although there are numerous isolated anecdotes of psychotic-like symptoms and prolonged dissociation,' says David Luke, an associate professor of psychology at the University of Greenwich who has conducted research on dark experiences and the similarities with psychedelic trips. Some people at Berman's center have spent as long as 40 days in one of his light-deprived dwellings. Others lasted just half an hour. 'We don't let people come any longer than four nights anymore,' says Berman. 'We don't actually think this is beneficial, as we tend to find that most people use some kind of coping strategy to stay in the dark for long periods of time.' Such strategies, Berman explains, are difficult to define, but they essentially pertain to people 'doing' things in the dark, even meditation or spiritual practices—rather than simply relaxing, doing nothing, and surrendering a sense of control. This ultimately insulates them to some degree from the mysterious and deeply self-reflective process the darkness is said to instigate, he says. 'This is a very dangerous practice if it isn't done right,' adds Holecek, who expressed particular concern for people who go in with 'a machismo, white-knuckle' mentality. 'I know people who have gone in who come out worse,' he says, explaining that a 49-day retreat was once an advanced Tibetan Buddhist rite of passage outside of a few traditions in which it is still used. 'It fell out of favor because ill-prepared, unsupported people went in for 49 days and then, instead of attaining enlightenment, they would literally go crazy.' Jason Halbert, former vice president of people and global security at Snap, did a darkness retreat at Sky Cave in February 2024. Speaking to The Profile podcast shortly after, Halbert, a behavioral scientist, explained that it took him about a day to get used to not absentmindedly checking his phone. 'When you're truly deprived of any inbound visual stimulation, be it your phone, light, TV—eventually you're left with dreams, thoughts, and blackness,' he said. 'We don't realize the enormous amount of triggers that anchor our identity.' Describing himself as someone who 'thinks all the time,' Halbert likened his four-night spell in the dark to 'cleaning up my office' and said it helped him ponder how to be a 'better human, professional, dad, coach, and husband.' (Halbert left Snap in 2019; in 2017, The Information reported that current and former employees alleged he told 'odd' and 'inappropriate' stories at work. Halbert told WIRED the allegations are 'false.') According to Luke, some people are more prone to hallucinations than others. And not everyone embraces them. 'It's distracting to them,' says Berman. 'The lights and stuff kind of feel a bit overwhelming and draw them back out of the subtleties.' But wellness entrepreneur and author Aubrey Marcus took it in his stride. 'These stalactite mites were dripping in gold, almost like Nickelodeon gak,' he says of his six-night experience at a center in Germany's Black Forest in 2020, which he documented, helping to introduce the practice to his spiritually inclined Joe Rogan podcast listener fans. Marcus also had visions of flashing strobe lights, fractal geometry, and aliens, who he claims to have communicated with. 'I would say it would be like the twilight of a really heavy, highly visual DMT experience,' he says. Marcus said he slept for 12 hours on the first night, according to data captured by his wearable, but by the end of his sojourn he was sleeping for less than two hours, 'because the visions were just so strong.' Some darkness practitioners and facilitators claim the hallucinations people experience are due to the possibility of prolonged darkness elevating levels of endogenous DMT, a potent psychedelic found not only in small amounts in the body but also in many plants. This is an 'as yet unproven and controversial hypothesis,' Luke wrote in a 2019 anthology, Psychedelicacies . 'Theoretically, the longer you spend in there, the more of a trip it becomes,' he says. Holecek, the lucid dreaming teacher, has his own dark room within his home and has clocked hundreds of days in darkness. 'You're entering the death space,' he says of the practice, referencing the Tibetan Buddhist state of 'bardo,' in between death and rebirth. 'People, I've discovered, are simultaneously magnetized and repulsed by darkness.' So where next for the practice? Berman says Sky Cave has a two-year waiting list, and a 'big tech founder' is set to visit in the coming months. He and Hocelek are working with Berman and the Institute of Advanced Consciousness Studies on a scientific study to measure any psycho-spiritual shifts brought about by the practice. 'I'd say we're hardly at the tip of the iceberg of where this will be in five or 10 years,' Berman says. While he's coy on being too evangelical about the potential benefits of the dark, 'there are incredible transformations that happen for people here,' he says. 'We can begin to see ourselves as we actually are.'