The Effects of Salt
Most Float Pods use Epsom Salt, magnesium sulfate, in high-concentration so that the head is buoyant, keeping the nose and mouth well out of the water for breathing.
There is also a secondary effect that is important to flotation therapy. Magnesium is absorbed through the skin from natural molecular diffusion. This tends to correct magnesium deficiencies. While magnesium can be absorbed from food, in many areas of the world over-cropping without adequate replacement of magnesium makes a normal diet deficient in magnesium.
The body naturally optimizes the levels of magnesium, so there is no overload effect from floating in salts for extended periods.
The primary effect from the high levels of salt in the Flotation Pod is to create a zero gravity environment. Unless you’re an astronaut, the Flotation Pod is the only place on earth where your body is free from gravity. Even NASA employs flotation to stimulate weightlessness. Zero gravity enables you to relax every muscle in your body—your neck, arms, back, and even ears. The Pod helps you locate those areas in which you’re holding tension so you can let go. When you do, you will enter a state of deep sensory relaxation, facilitating healing and creativity.