Stretch

On your back, flex your left leg and place your right leg over your left knee. Take your left leg in your hands. Keeping your head and upper back on the floor, pull your left thigh towards your chest. Your pelvis should stay on the floor.
 
Breathe out as you pull on your left leg and breathe in to return to your original position.

Variation: Try doing the exercise with your left leg stuck out, taking your left foot in your hands.  

Repetition: 3 sets of 20 reps, alternating right and left.