And then the effects of ammonia on your skin turn your stomach and you barf, resulting in a huge loss of fluids...
I'm with the others on Les Stroud and Survivorman.
Bear ends up in a motorhome every night, with AC/heat and bikini girls feeding him grapes, while Les is out there dragging batteries around.
I watched one on Sat. where he was dropped on tropical island (the story was that he was kayaking at a resort on one island, he got caught in the current, ended up miles from the resort island on another island, but while he was trying to get his bearings his kayak floated away, or something like that)
The island was all jungle, he stayed on the beach for a day or so but then decided to head through the jungle. He was so regretting it! It was really good, he seemed genuinely upset with his choice of leaving the beach. He couldn't sleep at night for all the critter, spiders as big as his hand, scorpions. he was creeped out.
At one point he was trying to cut a vine with a knife to try to get water out of it, some monkey's throwing things at him distracted him and he cut his hand to the bone.
That guy is going to go the way of Steve Irwin in some weird tragic accident that he's going to catch on tape.