In today's episode, host Chris Gorski speaks with Kristen Nicholson, the director of the Pitching Lab at Wake Forest University. Nicholson talks about how an interest in math and the way the body moves eventually led to studying children with shoulder injuries, accomplished figure skaters and eventually baseball players. Nicholson also explains why it's so difficult to study the motion of the shoulder, and how her work in the lab may be able to help pitchers stay healthier.