If you visit any gym, weight room or running track, you are sure to see the same critical training device being worn by athletes of all ages - a pair of headphones connected to their portable music.  Without it, workouts seem out of sync, longer and more difficult.  

Researchers have told us for years that there is a motivational link between exercise and music, but an interesting new study has now discovered that the connection goes even deeper, especially when an athlete can create his or her own beat.