HOW: Run in place. Start in an athletic position with your feet shoulder width apart and your knees slightly bent. Put most of your bodyweight into your toes and slightly raise your heels off of the ground. From this position, lift one leg driving your knee up as the opposite arm comes up. Absorb the weight with your other foot. Alternate going back and forth to each leg moving your arms with them.
FEEL: You should feel your calves, quadriceps, and hamstring muscles working.
COMPENSATION: Keep your chest up, don’t slouch forward. Keep your weight on the balls of your feet/toes when going back and forth.