Different core engagement demonstrated.

Hollowing: Pelvis tucked, core engaged & drawing in -- there is a change in the spine.
Drawing in: Spine stays neutral, core engagement only moves belly towards the spine.

Don't: Let your shoulders come up to the ears.
Instead: Engage your lower Trapezius muscle to keep the shoulder blades in place.

Don't: collapse into protraction (bringing your shoulder to the front)
Instead: "Smile with your collarbones" keeping the shoulders wide & strong

This exercise is a must for beginner athletes and those coming back to training after injury. This exercise strengthens the core functionally and leaves you with a good technique and prepared for more difficult tricks.
A hollow body position in hanging is crucial to maintain the integrity of the...