Discussion about this post

User's avatar
Chris Moellering's avatar

Interesting. I've read about these in a novel. It was used as an interrogation technique by the KGB. The mechanics of it weren't explained as fully as you described, so that helped.

Do you have to be naturally buoyant to use one? (I sink like a stone in the pool. Always have.)

Expand full comment
2 more comments...

No posts