Sleep tourism has joined the new sleep arms race: Image courtesy of Miraval Arizona Resort and Spa

For decades, success was measured by how little sleep you needed.

Corporate leaders boasted about surviving on four hours a night. Entrepreneurs wore exhaustion as a badge of honour. Athletes pushed through fatigue in pursuit of marginal gains. Sleep was often viewed as an inconvenience — something that got in the way of productivity.

Today, that mindset has been turned on its head.

"We've perhaps changed what we say, if not yet what we do," says Dr Matthew Walker, Professor of Neuroscience and Psychology at UC Berkeley.

"A decade ago, surviving on four hours was worn like a medal — proof of ambition, grit, seriousness. That medal has quietly been retired, and I'm grateful for it."

Dr Matthew Walker, Neuroscientist, UC Berkeley. Image supplied

The world's highest performers are now spending extraordinary sums of money chasing better sleep. Luxury hotels offer sleep concierges. Elite athletes wear biometric devices that track recovery overnight. Executives are installing circadian lighting systems in their homes, booking specialist sleep retreats and consulting neuroscientists to optimise their rest.

What was once considered downtime has become one of the most sought-after forms of self-improvement.

The result is a booming sleep economy encompassing everything from wearable technology and smart mattresses to neurological recovery programs, AI-powered health platforms and luxury wellness tourism. Sleep is no longer viewed simply as recovery. It is increasingly being marketed as a pathway to longevity, cognitive enhancement and peak performance.

But beneath the glossy marketing lies an important question: how much of this movement is grounded in science, and how much is simply another industry capitalising on our desire to perform better, think faster and live longer?

A PERFORMANCE REVOLUTION

The shift reflects a broader cultural change in how sleep is perceived.

Research has linked healthy sleep to improved memory, learning, emotional regulation, immune function, hormone balance and cognitive performance. In elite sport, recovery has become as important as training itself. Professional teams now employ sleep specialists alongside nutritionists and strength coaches, using sleep data to help athletes manage travel, jet lag and recovery. Corporate leaders have adopted a similar mindset.

Wearable technologies such as WHOOP and Oura now provide users with nightly recovery scores measuring everything from heart-rate variability and respiratory rate to sleep stages and recovery readiness. The promise is compelling: better sleep equals better performance. Walker believes society has largely accepted the science.

"The culture now understands, at least in principle, that sleep is not the absence of productivity but the foundation of it," he says.

"But understanding sleep's importance and obtaining it are not the same thing. We have won the argument. We are still learning to honour it."

Whoop technology captures recovery scores. Image: Android Police

THE SCIENCE THAT STACKS UP

Not all sleep interventions are created equal. Among the most evidence-based developments is circadian lighting. Scientists have long understood that light plays a critical role in regulating the body's internal clock. Exposure to natural light in the morning helps synchronise circadian rhythms, while excessive artificial light at night can suppress melatonin production and delay sleep onset.

This has fuelled growing demand for circadian lighting systems in luxury homes, offices and hotels. Similarly, wearable sleep trackers have become increasingly sophisticated. While consumer devices cannot match the accuracy of clinical sleep laboratories, they can provide valuable insights into patterns and behaviours. Yet Walker warns consumers to approach the market with a critical eye. "Both, and the ratio depends entirely on the evidence behind the product," he says when asked whether the sleep-optimisation industry is helping people or exploiting them.

"The good actors are democratising things that used to live only in a sleep lab. The trouble is that sleep sells, and a compelling story will always outrun a clinical trial. My rule is simple: ask for the data, not the testimonial."

THE NEW SLEEP ARMS RACE

If the first generation of sleep optimisation was about understanding sleep, the next generation is about engineering it. Around the world, scientists, luxury wellness operators and technology companies are experimenting with increasingly sophisticated ways to enhance recovery while we sleep.

Sleep tourism is emerging as one of the fastest-growing sectors within the wellness industry. Luxury resorts now offer dedicated sleep programs featuring biometric assessments, circadian rhythm analysis, sleep coaching and personalised recovery plans.

AI Powered Smart Bed. Image: Heka Sleep Australia

Meanwhile, smart bedroom technology is becoming increasingly advanced. The latest generation of AI-powered mattresses can automatically adjust temperature and support throughout the night. Some systems create individual sleep environments for couples, maintaining different temperatures on each side of the bed.

Perhaps the most intriguing developments are occurring in neurotechnology.

Researchers are exploring sound-based stimulation delivered during deep sleep to enhance memory consolidation. Others are investigating gentle electrical stimulation designed to strengthen slow-wave sleep, the stage most closely associated with physical recovery and brain restoration.

For Walker, however, the most exciting innovation lies elsewhere. "The thing that excites me most is closing the loop between measurement and medicine," he says.

"Right now your sleep data sits in one world and your treatment sits in another, and almost nothing connects them."

He envisions a future where sleep monitoring provides clinical-grade diagnostics, feeding directly into personalised treatment pathways. "Sleep moving from something we passively track to something that helps improve our sleep, and when needed, can actually diagnose and treat with precision. That's a future I think would be rather incredible."

THE RISE OF SLEEP LUXURY

Yet simplicity rarely drives billion-dollar industries. The market now includes AI-powered sleep coaches, neurostimulation devices, temperature-regulating mattresses, specialised supplements and luxury bedding brands promising deeper rest and faster recovery.

Critics argue that many products overstate their scientific credibility. Walker reserves particular scepticism for products that promise to replace sleep itself. "The category I'd treat with the most suspicion is anything sold on the premise that you can hack your way to less sleep with no cost," he says. "You can't shortcut the biology. The honest products help you get the sleep you need; the dishonest ones imply you need less of it."

He is equally wary of the growing pursuit of perfection. "'Perfect' is the wrong target, and chasing it can backfire," he says. "Healthy sleep is not flawless sleep. Even good sleepers wake briefly through the night and have rough patches."

Example of a Relaxation Room at the Underground Spa & Wellness Logan Hotel: Image courtesy of the Logan Hotel

A NEW STATUS SYMBOL

Perhaps the most fascinating aspect of the sleep economy is what it says about modern society.

Historically, wealth signalled freedom from physical labour. Later, it became associated with busyness and constant availability. Today, the ability to achieve eight uninterrupted hours of quality sleep may be becoming its own marker of privilege.

After all, good sleep often requires resources: flexible schedules, reduced stress, comfortable living conditions and access to healthcare. Yet Walker is uncomfortable with the idea of sleep becoming a luxury product. "It's being sold as one, which worries me, because sleep is a biological necessity and a right, not a luxury good," he says. "The danger isn't expensive mattresses; it's the message that good sleep is something you buy rather than something you protect."

Perhaps nowhere is that tension more evident than in the rise of sleep tracking. A growing number of clinicians are warning about orthosomnia — anxiety caused by obsessively chasing the perfect sleep score.

"We may already be there," Walker says. "A number on your wrist should inform you, not govern you. If your tracker is keeping you up at night, that is a beautiful and tragic irony."

When Walker published his best-selling book Why We Sleep in 2017, his mission was to convince people that sleep mattered. Nearly a decade later, he believes that battle has largely been won.

"The new chapter would be about discernment," he says. "How to tell the science from the salesmanship, the intervention with evidence behind it from the one with only a story. Awareness was the first battle. Discernment is the next one."

And perhaps that is the central irony of the modern sleep economy. While technology companies continue developing increasingly sophisticated ways to measure, score and optimise our sleep, the foundations of healthy sleep remain remarkably simple: consistency, darkness, movement, routine and time to switch off. The science may be less exciting than the marketing. But it is almost certainly more valuable.