All Fours Quad Stretch (Right Arm to inside of right arch, Stretch)

1. Start off on your hands and knees, then lift your leg off the floor and hold the foot with your hand.
2. Use your hand to hold the foot or ankle, keeping the knee fully flexed, stretching the quadriceps and hip flexors.
3. Focus on extending your hips, thrusting them towards the floor.  Hold for prescribed amount of time and then switch sides.

See the video.