I've heard of some people who are good athletes but who are not good in the martial arts. Why would that be the case? There are some people who excel in just about any sport they do, examples would be people such as Joe Montana who was the quarterback for the 49ers or Jim Eisenreich who played first base and was also an outfielder and a designated hitter for multiple teams in MLB or Bo Jackson whose famous for playing many sports. You would think such people would be good in the martial arts if they chose to do it.