Circuit 2: Mountain Climbers — 20 Reps
- Start in plank with your shoulders over your hands.
- With your core engaged, bring your left knee forward toward your chest. Switch legs, bringing the right knee forward while moving the left leg back. This completes one rep.
- Keep switching legs and begin to pick up the pace until it feels a little like running in place in a plank position.
- Complete 20 reps.