Float Doctor invites folks to experience their mind- and body-easing hydrochambers. Inside each, purified water is warmed to body temperature and mixed with heaps of salt, creating a solution that mimics almost perfect weightlessness. Clients reclining in these chambers can lock out sights, sounds, and even the pull of gravity, allowing the body to focus on healing. Many floaters also claim to experience a deep sense of stress-busting relaxation.