We know that spending an hour in a tank of water might sound at first like a david blaine style stunt but in fact this experience is all about total relaxation lie in a quiet darkened room in a warm solution of epsom salts about 10 inches deep and so dense that floating will seem effortless no need to be able to swim epsom salts are made from naturally occurring minerals and have long been renowned for their health and beauty benefits including easing stress and soothing muscles with mag