Bhujangasana

Bhujanga Asana is also known as the Cobra Posture.

Step-by-step
Lie down on your belly, keeping the palms on the floor below the shoulder and the elbows pointing up. Raise the chin off the floor.
Inhale and raise the head and chest, till the naval area, upwards. Tighten the legs allover from the waist down to the toes, join the feet.
Hold the posture and breath deeply and easily for about 10 seconds.
Exhale and simultaneously lower the head towards the floor. Relax your body and rest with your right or left cheek on the floor for about 10 seconds. This is one round.

Restrictions
Start with three rounds on the first day and increase to a maximum of five rounds. Take rest for sometime between each round. As you practice, you can increase the retention period of the position gradually from 10 seconds to 1 minute. Do not practice this asana while pregnant.

Benefits
Increases flexibility, rejuvenates spinal nerves and increases blood supply to the spinal region.
Activates and energizes the upper areas of the body like the chest, shoulders, neck, face and head.
Corrects various abnormal troubles like constipation, indigestion and increases appetite.