4.3 What the Research Says about X-FACTOR w/ Dr Phil Cheetham

In today's episode we're taking a look at the research around X-Factor and X-Factor Stretch done by our guest Dr Phil Cheetham.  First popularized in the 90's by Golf Magazine and Jim McLean, X-Factor is the difference between the rotation of thorax and pelvis at the top of the backswing.  Is it relevant?  Does it hold up under research?  Listen into the episode below to find out.