To do this pose, start by lying on your back with your legs and arms extended. Inhale and bring your knees up slowly to your chest and clasp your hands around them. If you can, put your forearms over your shins and hold yourself at the elbows. Keep your back on the floor, your shoulder blades flat on the floor, and try to pull your tailbone to the floor. Hold for 1 minute, breathing slowly the whole time.