Could a Japanese Sauna Dome Really Burn 600 Calories in 30 Minutes?

The Iyashi Dôme, a Japanese-made wellness device, has been creating buzz for its bold promise: up to 600 calories burned in just half an hour. Unlike a typical sauna, where you sit in a hot wooden cabin, this setup places you under a dome while you lie down on a padded surface. The heating element comes from far-infrared rays, which are designed to warm the body directly rather than just heating the surrounding air.

This dome therapy is marketed as more than just a calorie-burner. It’s said to support detoxification, muscle recovery, skin hydration, better sleep, and even an overall sense of relaxation. Supporters also point to its grounding in Japanese wellness practices, where sweating is seen as a pathway to cleansing both body and mind.

At Reforme, a spa in New York City, a 30-minute session will cost you around USD $150. That may sound steep, but the company behind the dome compares the results to running about 12 miles in terms of energy use. They claim an average person can sweat out over a liter of water and burn hundreds of calories without lifting a finger.

Users often describe the session as comfortable compared to a traditional sauna. Instead of sitting in a sweltering room, you lie on a cushioned bed while the dome covers the upper part of your body. This setup keeps you in a more relaxed position and makes the heat feel less overwhelming. Some people say they even nap through the session.

The dome has also gained attention for its cosmetic benefits. Infrared heat has been linked in studies to improved circulation, collagen stimulation, and reduced water retention. That might explain why some users walk out not just feeling lighter, but also noticing a subtle glow in their skin.

That said, experts remind people that not all claims are fully backed by clinical research. While infrared saunas are generally considered safe for healthy adults, they may not be suitable for everyone. Pregnant individuals, people with certain cardiovascular conditions, or those sensitive to heat should get medical clearance before trying it. Mild side effects like dizziness or overheating can also happen if you’re not careful.

Overall, the Iyashi Dôme adds a new twist to the wellness scene by combining ancient ideas of purification with modern infrared technology. Whether it lives up to the calorie-burning hype or not, it’s carving a spot among spa treatments that promise both physical and mental refreshment. For some, the experience alone may be worth the splurge.