Most all sports crossover. Your body is a pattern machine. It does not know if you are playing golf or tennis or baseball. It is just duplicating or learning patterns. Once you learn a pattern it is transferable to other sports. So any sport that you play has application to golf. And if you play golf it has applications and direct crossovers to other sports. So rather than learn something new why not use what you already know. Most of the motions you make in a swing you already know how to do them. You are doing them every day just moving around and being involved in the universe.