HOW: Begin in a full side plank with one foot in front of the other, keeping your body in one straight line from your heels to your hips to your shoulders. Hold for a few seconds, then drop your hips down on the floor. When in the elevated position, make sure you are staying strong in the shoulder blade, by pushing your shoulder blade away from you.
FEEL: You will feel your shoulder, hip, and core working, specifically the side facing the floor.
COMPENSATION: Avoid allowing your shoulder blade to sag back. Avoid allowing your hips to dip towards the floor when holding at the top