Kneeling Hip Flexor Stretch
How to do:
1- Placing your hands on your knee, kneel on your right knee, with your left foot out in front of you and your left knee bent at a right angle, so that your head is in line with your right knee.
2- Lean forward, putting your weight on your left leg. Feel the stretch in your right thigh, and hold briefly at the edge of the movement.
3- Release and reverse the movement back to the start position. Repeat the stretch with your right leg.