1. Stand erect and keep the feet about two feet apart.
1. Take hands backward, crossing the arms at the elbows.
2. Extend the left leg one-foot ahead.
3. While exhaling, bend the head and touch the toes with the forehead.
4. Retain this pose for a while. Inhaling, come to the original position repeat with the right leg extended.
  Thirty second to three minutes.
It relieves pain of the knees and legs, reduces obesity of the abdomen and waist and increases tolerance power.