Day 4 is all about your thoracic spine (t-spine) and the opposing muscle group, your pecs.

And... this is probably one of the most important videos in this series too. A majority of shoulder, neck and low back pain is actually caused by a tight t-spine and shortened pecs.

In this series, you'll flow through a series of mobility drills to unlock these areas, as well as static stretches to help lengthen the pecs and front of the shoulders.

Tools: access to a wall