Fluid Float Studio, Winnipeg

The sensory-deprivation spaces at Fluid Float Studio aren't "pods" or "tanks"—they're cabins. At four feet wide, eight feet long, and nearly seven feet high, they ensure that nobody gets claustrophobic during their session. What's more, they don't even have to be dark. Thanks to optional sound and light, clients can create their own custom mood, from introspective silence to soothing ambience to peaceful rave. Within each float cabin, 10 inches of water loaded up with 1,000 pounds of dissolved epsom salts—seven times the density of the Red Sea—ensures that the body floats like a cork. And since the water is heated to the temperature of the skin, it's easy for floaters to forget about it altogether.