Ardha Sarvangasana is an important Yoga pose and it helps in proper thyroid function and strengthening of abdomen. Ardha Sarvangasana also stretches upper back, improves blood circulation and encourages relaxation. Doing Ardha Sarvangasana is pretty simple and easy. Lie on your back and lift your legs up. Thereafter put your hands on your lower back for support, resting your elbows and lower arms on the ground. It is important to note that your weight is on your shoulders and mid to upper back and not your neck. Start breathing deeply and remain in the same posture for at least up to 5-10 breaths. To come to normal position keep your legs straight and lower them down slowly and gradually. This part helps in the exercise of your abdominal muscles as well.