eTe

I have been thinking about this a lot lately.
I can imagine this sort of thing could be the toughest you go through, and I know it happens because even as a civvie, I don't see the military with rose tinted glasses.
This got a write up in the paper a while ago I think. Standard response, people were horrified. But I imagine anyone should be able to understand how important it maybe be.
My question is, have you ever undergone this sort of thing? Ever looked into it a bit? Know of any of the techniques they use in there?

One thing I read is that it does increase your limit when placed in those circumstances.