Reclining hand-to-big-toe uses a yoga strap to ensure a good stretch without tension. It releases tight hamstrings and soothes an aching back. Lay face-up on the mat, legs extended, head on a thin folded blanket. Bend your left knee, bring it into your chest, wrap the strap around the left instep, and hold it with both hands. Push your left leg toward the ceiling, right leg long into the mat. Walk your hands up the strap to full extension, keeping the strap tight on the leg. Breathe for a few minutes, release the strap, hug the knee to the chest and switch sides.