The water is loaded with more salt than the Dead Sea, and both air and water are kept at skin temperature, so that as you float it is hard to say where body ends and environment begins. Once the lights are off, the darkness is total. The tank offers a reduced sensory experience as close to nothingness as you can get.
"You’ll hear things that you don’t normally hear,” Zeiger had said as he prepped me in his living room. “Your heart beat, your blood flow. A lot of people report hearing a quiet, high-pitched whine, which is your nervous system.”
Some subjects report powerful emotional experiences, as in a particularly intense session of psychotherapy, and nearly all subjects report greater relaxation and an elevated mood after floating.”
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