I saw something about this kind of thing on the Discovery Channel or one of those other similar channels. The guy they profiled is not exactly a super huge guy and said a lot of it had to do with conditioning your body to push through what it typically feels is an unacceptable level of pain. His "trick" was that one the pan begins to bend, it is also heating as well. Once you begin to get some momentum of it bending, it's just a matter of keeping up the effort and it becomes less difficult.
But man, those first few seconds must be a bear.