Come into an all fours position on an exercise mat with your hands directly under your shoulders and your knees directly under your hips. Drop your hips, so your legs extended directly behind you and push your chest to the sky, keeping your arms fully extended. Bring your right leg up to your right side until your knee is roughly level with your hip and bent at 90 degrees. Position a foam roller perpendicular to your body and under the middle of your left thigh. This is your start position. Shifting your weight into your left thigh and applying pressure, gently roll back and forth on the foam roller, feeling for any particular areas of tension in your quads. Repeat for the recommended amount of time before changing to the other side.