STARTING POSITION:
Lie on your back on a mat. Grab your right knee with your left hand.
MOVEMENT:
Slowly pull your right knee towards your left shoulder until you feel the stretch in your right glute. Make sure you don't move your trunk while you perform the exercise. Maintain the stretch during the required time and then return to the starting position. Then switch the leg.
TIPS: You should feel the stretch of the muscles but not pain.