700lbs of Epsom salts are added to 170 gallons of water, creating a 10 inch deep solution which is heated to 93.5 degrees (skin temperature). Unless you are an astronaut, this is the only situation you will encounter where your body is free from the forces of gravity. Every single muscle in the body is allowed to relax. With ear plugs in and, if you wish, the tank's interior lights off, the quietness and the darkness allow the mind to drift into the deepest state of relaxation possible. This in turn balances the brain: that is, reduces the activity in the left (logical) side of the brain and increases activity in the right (creative) side. For the first time, both sides of your brain are in total harmony. When you consider that we normally only use 11% of our total brain power, you can see that a session in the tank enables us to tap into a huge, previously unavailable source of creativity, imagination, self-visualisation and problem solving.