Full explanation HERE: http://bit.ly/18ElcB4 Quick summary: According to "ancient traditions" in Karate, you should often: 1. Pivot on the heel when you turn. 2. Keep your weight centered above your heels. 3.Never lift your rear heel off the ground when you punch. Right? Wrong. In this video, Dr. Lucio Maurino, world kata champion, gives a quick lesson on why the traditional heel-turn of Karate is fundamentally foolish, possibly harmful, and above all; biomechanically wrong. Complete explanation here: http://bit.ly/18ElcB4