(This pose stretches the backs of the legs arid the buttocks, and is a nice complement to the preceding poses.) Lie on your back with both legs extended and in line with the body. Inhale, lift your right leg, and hold the back of the leg with both hands. Keep your left leg grounded on the mat, your knee and toes pointing upward. Exhale and spread your toes; press your left thigh into the mat and your right thigh against your hands to engage the thigh muscle as you continue straightening your right leg. Hold for 3 to 5 breaths, then return your right leg to the mat. Repeat the sequence on the opposite side.