Most people cant last more than 3 days without water before going into a coma. Of course that varies a bit depending on the person and the conditions but its a rough max for the average person and I didn’t want to kill the guy.
Just make it 127 hours and make a movie about it. If he was well hydrated to begin with and slowed his heartbeat with meditation most of the time, I bet he could do it. Though, you’re right, it wouldn’t be ethical to risk his life on it.
Well, it is not as dramatic as a human surviving 70 years without food or water. But in Texas, we have a documented case of a horned toad surviving 31 years entombed in the cornerstone/time capsule of a Court building. Ol’ Rip of Eastland County. Believe it or not.