This guys is a beast on the football field. He is also a smart guy in the gym. Watch this video to see he works his butt off. He starts by warming up his body. This enables you to get your blood flowing to the muscles you are about to work. It will lesson the chance of an injury. The other thing he does is work his core during breaks in weight training. In between sets he does crunches with weight and core work. His quote was “strength starts from the middle in.” Mr. Willis couldn’t be more right. Just check out his body and you will see that his athleticism is a direct result of his powerful core.