On Navy Seals, I had no idea they were trained that hard, they're constantly cold, wet, and miserable! And they only get like 4 hours of sleep during one of the weeks of there training.
[Edited on 11/17/2004 9:28:01 PM]
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just for clarity, I was posting that with the reference to the thing where the cat tries, and ends up dead. I forget the phrase/story off of the top of my head.