Exercise execution guide
Lay down on your side with your legs stacked. Prop yourself up by placing your elbow and forearm flat onto the ground, with your arm pointed away from you. Stack your elbow under your shoulder. Bend your knees to a 90-degree angle so that your feet are behind you, keeping them stacked.
Keeping your feet together and core engaged, raise your hips straight up from the ground. Keep your body in line throughout the movement. In the same motion, contract your glutes to lift your top knee towards the ceiling, keeping your bottom knee on the floor. Pause and lower yourself back down to the starting position.