Pushing YOUR limits????

Im really interested in that point you reach when you actually fail from exhaustion at something, whether it's weight training or cardiovascular exercise. I'm interested in seeing just how much of that is a physical point and how much of it is a mental point. When you reach that point where you say, " oh that's it! I can't do another one," if you actually challenge yourself with something like "All right, there's a man standing with a gun to your mothers head, and he says, "if you do one more" of whatever it is you're doing--say, jump rope for one more minute---"i wont pull the trigger, otherwise i will"---see if you can do it!! You've got to try and challenge yourself this way. I find that you have to make it into a game at some level on order to continue doing whatever it is that you're doing that's causing you so much discomfort!!

-Carl-