Supta Baddha Konasana
Stretches the hips and hip flexors
Loop a strap and place it across your sacrum, over the tops of your thighs, and around your feet. Place folded or rolled-up blankets under each of your knees and lie on your back with your heels together, as they were in Baddha Konasana. Stay here with eyes closed, and relax for 5 to 15 minutes to stretch the hips and hip flexors intensely.
See also Pre-Meditation Hip Openers