- Hurdlers stretch(quadriceps)
Sit with on leg bent and tucked under hips so that heel lies just outside hip; the other leg may be bent or straight. foot should be extended straight back and not flared out on one side. Slowly lean back until a stretch  is felt on top of the bent leg. Note- to stretch the upper thigh and hip flexors, tighten buttocks and lift hips on side of the leg that is tucked under while performing this stretch. Bending the front leg can provide a further stretch.
Muscle –quadriceps