Sensory Deprivation tanks... anyone here ever tried it?

Ok, so im booked for a sensory deprivation tank tomorrow. Supposedly a good stress reliever, like a spa thing.

Basicallly a tank full of salt water designed to isolate your senses, so.. pitch black on the inside, no sound... you just float on your back. Like a coffin, you crawl in and the lid gets shut and there you are.

Im kind of nervous about it. Im claustrophobic a bit. And they want you to do it naked... im bringing my swimsuit.

for an hour, 3,600 seconds in a coffin full of saltwater and no light or sound.

I've never done this before and im not sure i can make myself do this.

Have any of you tried it and what was it like.
Sensory Deprivation tanks... anyone here ever tried it?
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