I heard an interview with a professor from the States who specializes in the physics of superheroes. He has calculated that for Superman to leap tall buildings (1/8 mile high) in a single bound, he would have to attain an initial velocity of 140mph by exerting 6000 pounds of pressure against the ground. It has inspired me to spend more time at the gym. I think my best was about 400 pounds on the leg press. Almost… almost…