Cloud 9 Float & Wellness

Cloud 9 Float & Wellness on South Street pairs float therapy with infrared sauna, which is a more coherent combination than it first appears. Both are sensory-reduction practices: the float tank removes input almost entirely, and the sauna narrows it to heat and breath. Used together they make a longer session with a genuine arc to it.

Float therapy — sometimes called REST, for restricted environmental stimulation therapy — uses a tank of water saturated with Epsom salt so the body floats without effort. At skin temperature and in darkness, the usual streams of sensory information largely stop. Practitioners use it for pain management, anxiety and sleep as much as for relaxation.

The infrared sauna alongside runs cooler than a traditional room and works by warming the body directly rather than heating the air, making for a longer and gentler session that pairs naturally with a float either side.

South Street sits in Boston’s Leather District, walking distance from South Station and well connected on the Red and Silver lines. Facilities of this kind run on booked appointments, and floats in particular need reserving ahead since each tank serves one person at a time.