How are zen and martial arts connected?

The legend of the Eastern Martial Arts is that they originated in the temples of the Shoalin priests and were created by the Bodhidharma, the individual credited with really establishing Zen, to keep the priests in physical shape so they could understand what he was teaching. Many equate the mental focus required to do martial arts with the concentration required to meditate. Zen Archery is probably the most intertwined of the two.