Bite-size mobility drill for hip flexion (approx. 5 minutes) - Level 1 Start in a kneeling lunge position, with your stride length as long as possible whilst keeping the front knee over the front ankle and not caving inwards. Reach the arms up and overhead as you think of tucking your pelvis under. Transition backward to sit onto the back heel, straightening the front leg and flexing the front foot, you should feel the hamstring stretch. Dynamically transition between the two stretches. 6 to 10 each side