Cold Plunges Are Hot. But Can You Do It in Your Home Pool?
With interest booming, wellness experts and pool builders have seen more homeowners hoping to take cold therapy immersion into their own backyards.
With interest booming, wellness experts and pool builders have seen more homeowners hoping to take cold therapy immersion into their own backyards.
Cold plunges have gone from fringe curiosity to full-blown cultural phenomenon, the wellness world’s equivalent of a headline-grabbing breakout star.
Adherents slip into icy water on a daily basis, chasing an electric jolt of clarity that feels like a flip has been switched inside your brain.
Dedicated cold plunge practices are everywhere from upscale fitness studios and pro sports locker rooms to renowned wellness destinations such as Mountain Trek Health Reset Retreat in British Columbia.
Considering the ever-expanding assortment of companies flooding the market with cold plunge tubs and other custom devices dedicated to achieving icy bliss—with costs potentially reaching into the tens of thousands—some homeowners are tempted to use their swimming pools as an alternative.
“We’re absolutely seeing more homeowners use their pools as year-round cold plunges, especially in colder climates,” said Nick McNaught, CEO and co-founder of Toronto-based Stay Unbounded, which offers cold exposure workshops, retreats and certifications.
“The motivation is often simplicity and cost. If the water is already cold, people see value in keeping the pool open longer or winterizing it differently to support cold exposure.”
Suzanne Vaughan, president of Massachusetts-based pool builder SwimEx, points out the inherent convenience that comes with taking a frosty dip out back.
“From what homeowners tell us, the appeal of a cold plunge at home is less about chasing extremes and more about having a simple ritual that’s always available,” she said.
“It’s quick, accessible and easy to build into a daily routine.”
Among new clients Vaughan works with, year-round cold plunge use is usually planned from the start rather than as an afterthought.
“More are choosing indoor pools or small attached structures because that makes temperature control, equipment protection and day-to-day use much easier in colder climates,” she said.

If someone is thinking about using an existing home pool as a cold plunge, the main questions are likely to involve practicality and protection.
“Larger volumes of water take more energy and time to keep at colder temperatures, and you need a plan to protect plumbing, finishes and equipment from freeze–thaw cycles,” she added.
“Whatever the design, you want a system that’s built for the temperature range you have in mind, and a pool professional who can help you winterize safely.”
One such professional is Hunter Gary, a certified master pool builder and owner of H2 Outdoor Living in Tennessee.
“Most everyone has a ‘number’ in degrees when it comes to cold plunging. When a client asks our company to design a cold plunge for them, I ask ‘what’s your number?’” Gary said.
“A smaller body of water or cold plunge vessel may be much easier for maintaining a balanced temperature…but if using a pool gets you excited about a more serious approach to inviting this wellness experience in your life, then go for it.”
Amy McDonald, owner and CEO of Under a Tree, a wellness consultancy, said transforming a pool into a plunge might not be worth time and investment
“It is almost impossible to retrofit a standard swimming pool into a cold plunge,” she said.
“The energy and money to do it properly is greater compared to just creating a complimentary contrast circuit.”
A proper setup needs to be exceptionally cold, she noted, so depending on where the pool is located it might not get chilly enough to provide optimal health benefits.
“That could work in northern areas of the U.S., but it takes a lot for a pool to generate and keep that kind of cold, not even considering if the pool ices over,” she said.
McNaught echoed those concerns, citing how home pools aren’t designed specifically for cold plunging, so temperature consistency, cleanliness, ease of access and safety become important factors.
“Dedicated cold plunge setups offer more control, smaller volumes and lower ongoing maintenance,” he said.
“For many people, a pool works as an entry point. Over time, those who commit to the practice transition to a dedicated setup because it better supports frequency, comfort and long-term use.”
Beyond geography and climate, industry experts pointed out other challenges homeowners are likely to face.
“Pools are saturated with chlorine and other chemicals that directly absorb into the bloodstream. The advantage of many cold plunges is that no chemicals are required for residential use,” said David Haddad, as the co-founder of Oregon-based BlueCube Wellness.
“Constant ozonation and filtration is enough to kill organic compounds without exposure to sanitizing chemicals.”
Most cold-plunge systems are monitored to stay between 50-60 degrees Fahrenheit—with experienced plungers often preferring lower temperatures.
While “the ultimate experience might be a glacial lake in Finland, unfortunately that’s a bit out of reach for most of us,” said Andreas Stelluti, co-founder at Texas-based Colderatti, whose vessels feature the world’s first chemical-free cold plunge technology, powered by a triple filtration system that removes 99% of impurities to provide a system with drinking-quality water.
“Having a cold plunge at home brings that experience to your backyard, making it very easy and accessible, so you have the ability to make it part of your lifestyle,” he added.
Stelluti noted that as spring arrives and clients’ home pools start to warm up again, they begin to miss the cool water.
“Many say ‘I really need this to be part of my lifestyle year-round’ and that desire for consistent, accessible cold immersion is what motivates them to invest in a dedicated cold plunge setup,” he explained.
“Unfortunately, you can’t use your pool as a year-round cold plunge during the summer. Especially not here in Texas.”
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Could fears of an AI apocalypse be distracting us from the dangers already here? Experts debate whether regulation should focus on speculative existential threats or present-day harms, including cyberattacks, weapons and unsafe autonomous agents. Read more via the link in bio.
There is ample and alarming evidence that artificial intelligence can help humans do bad things, such as committing cyberattacks, building weapons and even killing themselves or others. The Hugging Face hacking episode—and a growing list of others by poorly constrained swarms of agents—indicate just how powerful and potentially dangerous AI has quickly become.
Yet many inside the U.S. AI industry insist far worse is coming, on account of the imminent arrival of AI with superhuman and self-improving abilities.
Plenty of experts, including many who study AI harms for a living, are skeptical. The so-called doomers’ assertion that AI might decide to wipe out all of humanity—or even “just” topple human civilization—is contingent on it achieving a pace of development not yet seen.
And if the assumptions behind this global-doomsday scenario are wrong, it could lead us to curb or regulate AI in ways that don’t address its real harms.
At the center of this debate is the claim that current AI systems might take over the job of training their next versions, a process called “recursive self-improvement.” Think of it like evolution on steroids—billions of years happening at light speed within vast AI supercomputers. Anthropic Chief Executive Dario Amodei recently proposed a global agreement to slow down the pace of releasing new AI models, with the goal of delaying the arrival of recursive self-improvement.
“I don’t think we’re anywhere near ‘artificial general intelligence,’” says Melanie Mitchell, a professor at the nonprofit research group Santa Fe Institute who studies AI. She said AI is making impressive strides but thinks claims by engineers that they’ve achieved recursive self-improvement don’t stand up to scrutiny.
She is hardly alone. A recent paper by two dozen academics at Princeton, Stanford and other institutions found that even the most cutting-edge AIs are incapable of doing the original research required to advance the AI frontier.
Two of the authors involved in that paper also threw cold water on the idea that the Hugging Face swarm hack by OpenAI agents occurred because of a breakthrough in intelligence. The attack succeeded primarily because of a lack of basic technical guardrails, not an unmanageable explosion in AI capability, they wrote.
Yann LeCun, former chief AI scientist at Meta, posted that this analysis was “a welcome dose of sanity in an otherwise insane debate.”
OpenAI and Anthropic didn’t respond to several requests for comment.
The people who disagree with the doomers still consider AI to be dangerous, and point out that such systems don’t have to be particularly capable to be powerful. Some argue that AI should undergo regular evaluation by outsiders and that the companies that make it should be held responsible when their systems do harm. AI should also be treated the same as airplanes and elevators, and should be designed to do the least harm possible, they say.
“If you believe that technology is powerful enough to create novel, dangerous viruses, or to essentially take over the whole planet for some reason, then it must also be strong enough to create cures for cancer, to cure aging, to fix socio-economic or political problems,” says Christopher Canal, CEO of EquiStamp, a company that helps companies and governments evaluate AIs.
AI has shown an ability to rapidly advance because it is matching the abilities of humans who are constantly feeding it their knowledge. Sometimes it can recombine that knowledge and exceed what people have been capable of, through a kind of post-training known as reinforcement learning, as we’ve seen in mathematics.
Today’s LLMs are “models of knowledge” rather than actually intelligent, wrote Yi Ma, professor of AI at Hong Kong University.
Researchers at universities and commercial AI research labs in China wrote in a recent paper that autonomous, self-improving AI is likely to be a long way off, due to the sheer number of breakthroughs required. They also argue that humans will probably remain in the loop, supervising that process—and gating how fast it can occur.
Vals AI, a company that evaluates today’s AI models, maintains an RSI Index that benchmarks whether models can “do the research that builds the next model.” So far, no publicly released model is even close.
Yet Rayan Krishnan, CEO of Vals AI, says his team projects models will exceed humans’ ability to improve the next generation of AIs by August 2027, or sooner, and at that point could start building their successors all on their own.
“Once we get to recursive self-improvement, the fear is that all bets are off,” he says. “You could end up with a ‘fast takeoff’ situation, where the models quickly acquire skills and eclipse humans across every possible domain.”
In a reply to the resignation tweet heard round the world from Jacob Coxon, another Anthropic engineer declared his belief that those odds were at least 10% over the next decade. Many others in the industry chimed in to say they thought the percentage was even higher.
Some who argue the end is nigh say they calculate their personal p(doom) based on a chain of conditional probabilities—a bit like the Drake equation for calculating the likelihood of intelligent alien life. Since all those probabilities are based on speculation, estimates range from 0% to nearly 100%. Many land around 10%.
“The weird thing is that if you go back and look at the predictions on this over the last 10 years or more, it’s always been 10%—it’s just a nice round number,” says Mitchell. “I think it’s all vibes, and there’s no actual evidence or calculation.”
One argument against worrying about superintelligent AI is that the world is full of unlikely humanity-ending disasters, and trying to avert them all can make it impossible to prioritize, says Canal.
This has led AI experts and the policymakers who listen to them to propose remedies that don’t get at its real and present dangers.
AI companies’ proposals to “pace the frontier” aren’t addressing the problem in the right way, argues Stuart Russell, a computer-science professor at the University of California, Berkeley, and the president of the International Association for Safe and Ethical Artificial Intelligence.
“It’s like saying we’re driving toward the cliff at 60 miles per hour and we’re going to drive toward it at 40 miles per hour instead, and everything will be OK,” he says.
Russell and his peers have proposed that AI companies should have to meet the same standards that govern other areas of everyday life, from air travel and buildings to food and drugs. They highlight the “behavioral red lines” AI should not be allowed to cross. Breaking into other computer systems, stealing information or advising terrorists on how to build biological weapons are all illegal for a human to do, and should be illegal for companies’ AIs as well, he argues.
The challenge for AI companies in such a proposal, he adds, is that it would be a de facto ban on today’s advanced AI systems, since the companies behind them don’t know how to make them respect such boundaries all of the time.
Others have proposed something like the Food and Drug Administration, but for AI, but setting up a new agency has so far been a nonstarter in Congress. And some prominent voices in tech have said such a structure would give up America’s AI edge to China.
Given the bipartisan groundswell of support for curbing AI companies and their creations, however, that may soon change.
“The tech industry has had this mantra for decades that regulation is bad,” says Russell. “They don’t accept the liability for any harm, and they hide behind free speech. That, I think, has to change.”
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