HOW: Get set-up standing. On the side, you want to stretch, grab your foot and pull it back towards your butt by bending your knee. Keep a flat back, squeeze your butt muscle to push your hip forward, and have your knee directly below your hip. Hold this position.
FEEL: You should feel a stretch on the top of your thigh in your quadriceps.
COMPENSATION: Do not lean side to side or lose your balance, do not arch your back, do not let your knee flare out to the side excessively