Humans aren't hunter/gatherer's any more so we can't depend on our lifestyle to stay fit... That's why we have to exercise to stay fit. Clearly, most of have a problem with this, so see what College Humor has new to make it easier and more effective to improve your speed and strength with their self-rewarding exercise machine! Nice! Football would work for the boys but I think I'll need a new season of True Blood to make it work!