I’ve heard mark say keep distance equal on both sides of rib cage and pelvis

Thanks Anthony.

Gravity Fit i am less familiar with however this is absolutely correct with the posture belt. Essentuially, as Aaron described, elbows in front of ribcage, hands outside of elbows with fingers pointing up.

As the player rotates, keep the ribcage down and look for where they adapt/and how as they rotate, for example at 1/2 back they start to elevate, excessively left lateral flex etc.

Hope this helps