Heat has been used for rest and recovery for as long as people have gathered around warmth. Infrared saunas are a gentler take on an old idea: rather than heating the air around you to an intense temperature, infrared panels warm the body directly, so you can sit comfortably for longer while still working up a proper sweat.
How infrared heat works
A traditional sauna heats the room; an infrared sauna heats you. Infrared wavelengths are absorbed by the skin and the tissue just beneath it, raising core temperature at a lower ambient heat — typically around 45–60°C rather than 80–100°C. For many people, that makes sessions feel calmer and easier to settle into, which matters if the aim is to relax rather than endure.
Infrared Sauna is one of five treatments at Floatwell Cambridge, 500 m from the station — about infrared sauna →
Circulation
As the body warms, blood vessels near the skin dilate and heart rate rises modestly — a response sometimes compared to light aerobic activity. Studies suggest that regular passive heat exposure is associated with improvements in markers of vascular function, and research on Finnish sauna bathing has linked frequent use with better cardiovascular outcomes over time. Infrared-specific research is younger and smaller in scale, but the underlying mechanism — heat, dilation, increased blood flow — is well understood.
Muscle recovery
That increased circulation is one reason athletes have taken an interest. Small studies suggest infrared sauna use after training may reduce perceived muscle soreness and support the feeling of recovery in the days that follow, possibly by improving blood flow to worked muscles while placing little additional strain on the body. The evidence base is still developing, but the practical experience is consistent: warm, loose muscles and a body that feels noticeably less tight the next morning.
Sleep
Heat may also lend a hand at night. Body temperature naturally falls as we drift towards sleep, and deliberately warming up — then cooling down — in the hours before bed appears to strengthen that signal. Research on warm baths before bedtime points the same way, and many regular sauna users report falling asleep more easily on session days. As with a float, part of the benefit is simply the pause: twenty to thirty minutes with no phone, no inputs and nothing to do.
Finding your rhythm
As ever, the honest summary is that infrared sauna is a promising, low-risk practice rather than a miracle — and one whose benefits seem to build with consistency. If you are curious, start with a single session and notice how you feel that evening and the next day. If it suits you, our sauna sessions and memberships make it easy to fold regular heat into your week.