Core Strengthening- CRAB'S POSE 🦀 Crab pose, also known as reverse table top and ardha purvottanasana in Sanskrit, is a mild beginner's backbend that strengthens the arms and improves posture. With the hands aligned under the shoulders and feet under the knees, the yogi uses strength to keep their front body lifted toward the sky. Instructions : Sit on the buttocks with the knees bent, feet hip distance wide and flat on the floor. Place the hands on the floor behind you, shoulder distance wide