The best sprinter in the world is Usain Bolt. His contact with the track is about 0.08 of a second and he produces an astonishing 1200 to 1500 pounds of force each time he strikes the ground. According MacMillan, this type of explosiveness can only be achieved by training elastically, not by loading your body with weight. The tuck jump is one of the best elastically explosive exercises you can do. Simply stand in place and jump, drawing your knees up to your chest. Land softly and repeat for 10 to 20 repetitions. Repeat for four sets.