HOW: Start by lying on your back with your feet elevated on a bench. Loop a band around the middle of both feet. Place your arms down and out at your side with your palms down for support. From here, push into the elevated surface lifting your hips off of the ground. Maintain that height as you drive one knee towards your chest against the resistance of the band. Alternate back and forth for the prescribed amount of reps.
FEEL: You should feel your hip muscles working.
COMPENSATION: Keep your hips off of the ground while marching.