Copenhagen 90 90s

Begin in a side-lying position with your bottom hip and knee bent to 90 degrees and your top leg resting on a bench or box, your foot, shin and knee supported. Prop yourself up on your forearm, keeping your elbow directly under your shoulder. Engage your core and adductors to lift your hips off the ground, creating a straight line from your shoulders to your top knee while maintaining the 90-degree angle at your bottom hip. Keep your pelvis level, chest tall, and avoid rotation or hip sagging. Complete the prescribed time or reps.