What is piriformis stretch (from legs bent)?

Piriformis stretch (from legs bent)

1. Lie on your back with your knees bent.
2. Lift your affected leg and rest that ankle on your other knee.
3. Use your hands to gently pull your knee toward your opposite shoulder. You should feel a stretch in your buttock and hip.
4. Hold for 15 to 30 seconds.
5. Repeat 2 to 4 times.
6. It's a good idea to repeat these steps with your other leg.