The Ready State Virtual Mobility Coach is like having a virtual Kelly Starrett in your pocket.
Do get hung up on which muscle it is probably a combination.
The lat is the prime mover of shoulder abduction, shoulder extension, and a strong synergist in internal rotation.
The lat acts on the scap, spine and pelvis which is why you feel it with different things you are doing.
Episodes & Daily MIWods to watch
Episode 155: Periscapular, Regional Death by Pain Ball
Overhead Lateral Seam
Wednesday October 26, 2016 -LateralSeam
Friday, November 11th, 2016 – Lateral Seam & Serratus
Thursday January 5, 2017 Lats& Obliques
Tuesday February 21, 2017 External Rotators