Bosu Ball Mountain Climber

Instructions

1. Place a Bosu ball flat side up and grip the edges; start in a high-plank position with arms straight and core tight.
2. Drive one knee toward your chest, then quickly switch legs in a running motion.
3. Keep your hips level with your shoulders and avoid letting them rise or drop.
4. Continue alternating legs as fast as you can maintain form for the prescribed duration.