Sit with buttocks on the heels (Vajrasan). Raise the buttocks and stand on the knees. Lean forward and place the hands flat on the floor. This is the starting position. Inhale while raising the head and depressing the spine so that the back becomes concave. Exhale, while lowering the head and stretching the spine upward.
At the end of the exhalation contract the abdomen and pull in the buttocks. Head will be now between the arms, facing the thighs. This is one round. It may be done for 5-10 times .Be careful not to strain yourself.
Benefits
This asan improves flexibility of the neck, shoulders and spine. Tones female reproductive system. Can be safely practiced during first 6 months of pregnancy.