Place your left leg behind you with toes turned inward as far as is comfortable. Lean forward onto the right leg, bending slightly at the knee. Keep the hips square and torso upright. Think about pushing the pelvis forward. When you feel a gentle stretch in the hip and groin, reach with your left arm backward as if you were pitching a baseball. Slowly move your arm through the throwing motion, holding the stretch throughout. Do two sets of 12 reps on each side.
Superhuman You: 3-D Hip Flexor