Two hours of floating is equivalent to eight hours deep sleep.
The float tank can be thought of as being like a giant private bath tub which holds 10 inches of water and 350kg of Epsom salts. This amount of salt makes the water extremely dense so when you lay down, you instantly float like a cork. The water is kept at a constant 34.5 degrees. This is skin-receptor neutral, which means you lose track of where your body ends and the water begins. You are floating in what feels like a zero gravity environment. With the tank light turned off you float in darkness and the outside world disappears and amazing things happen. The body’s natural mechanism for healing is known as the parasympathetic response, which can only occur during deep relaxation. The float tank evokes this response naturally and every time you float this response is reinforced. The effects also become stronger and last longer. Another remarkable benefit is that after about 35mins of floating your brainwaves change to a lower frequency rhythmic state known as the theta state. The theta state is that twilight hypnagogic state you enter for a few moments before you fall asleep. Generally after years of practice, people can enter and sustain theta state through deep meditation. The float tank will get you there effortlessly. The usual dominant logical left sided brain is quietened and your creative right brain can come out to play without distractions. Unusual powers of creativity and imagination are highly common in the tank. Coming out of your float is an experience in itself. Your senses will be sharper and your world may seem a lot more colourful. It’s likely that you just experienced the most complete relaxation you’ve ever felt.