It is the classic how do we break fast twitch and slow twitch muscles firing down to a Barney level that people can test at home. This video is very misleading on if you can jump higher you will hit it farther. Jump up and down all you want, you do not need to have Arnolds arms to crack a whip. It is about getting things to fire in the right order. Muscles will help some, but the golf swing is about SPEEED not power at a very specific spot. The loading and unloading of the wrist and how to snap them will get you more speed faster than box jumps. just saying.................