Step 1: Stand tall with your core pulled in and your shoulders back. Places your hands out at hip height to help gauge your performance. Keep this posture and raise one knee up to the hips or higher, keeping the other leg bent and ready to follow. Quickly alternate knees, leaning back with a strong core to help drive them toward the chest. Repeat for allotted time.
Modification (beginner): March in place.
Modification (advanced): Travel with it; put hands up overhead to utilize your core.
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