Biological research demonstrates that far infrared rays with wavelengths between 5.6um and 15um are the optimum for absorption by human body. This span of wavelengths is the most beneficial to living organisms. The human body is no exception. It thrives and depends on far infrared waves for cellular growth and health and is indispensable for the maintenance of health.

It uses infrared radiant energy to directly penetrate the body's tissues to a depth of over 40mm. Its energy output is tuned to correspond so closely to the body's own radiant energy that our bodies absorb close to 93% of the infrared waves that reach our skin.

Biological research demonstrates that far infrared rays with wavelengths between 5.6um and 15um are the optimum for absorption by human body. This span of wavelengths is the most beneficial to living organisms. The human body is no exception. It thrives and depends on far infrared waves for cellular growth and health and is indispensable for the maintenance of health.

It uses infrared radiant energy to directly penetrate the body's tissues to a depth of over 40mm. Its energy output is tuned to correspond so closely to the body's own radiant energy that our bodies absorb close to 93% of the infrared waves that reach our skin.

A conventional sauna must rely only on indirect means of heat. In a JT Spas infrared sauna, over 80% of the infrared energy available can be directly converted to heat within our bodies. Thus a JT Spas infrared sauna can warm its user or users to a much greater depth and much more efficiently than a conventional sauna, as its energy output is primarily used to convert energy directly to heat in us and not to create excessively hot air that then only heats the skin superficially. This crucial difference explains many of the unprecedented benefits reported to be available through a JT Spas infrared sauna, which are not attainable when using a conventional sauna.

The infrared energy applied in the thermal systems may induce up to 2-3 times the sweat volume of a hot-air sauna while operating at a significantly cooler air temperature range of 110°F to 130°F vs 180°F to 235°F for hot-air saunas. The lower heat range is safer for those concerned about cardiovascular risk factors that might be adversely affected by the higher temperatures encountered in old-style hot-air saunas.

Chinese and American researchers report beneficial effects from hour-long whole-body infrared exposure in two groups of hyper-tensive patients that they studied including a 24-hour long increase in peripheral blood flow and decrease in high blood pressure.

It is also more pleasant to breathe air that is from 100°F to 113°F cooler while in the sauna. Due to its user-friendly nature, people naturally prefer to use a JT Spas infrared sauna and will continue to do so on a regular basis due to the ease of breathing much cooler air while feeling as warm as they choose, and to a distinctive feeling of well-being reported by users as an after effect