Stand in the Tree posture with arms up and hands together, keep your body weight on right foot and slowly start bending forward.
Allow your body weight to slowly pass on to the front of the right foot as you steadily bring your torso lower and lower till its parallel to the floor.
The left leg is raised and is made parallel to the floor, similarly to the upper body.
Now your whole body is balanced on the right foot, the right leg is held straight, the spine is lengthened and erect and arms are along side the head, the chin is raised up as if you are looking at a point in front of you. The left leg is held straight with toes of the left foot pointed away from the body.
Engage your abdomen so as to hold yourself firmly in the posture, direct the senses inwards except only the eyes which are focusing on a point in front of you.
Hold this posture for 30 seconds and then gently come out of the posture by placing the raised foot on the floor and standing straight in samastithi.
Repeat on the other foot in same way for 30 seconds.
Strengthens the core (abdominal area) and legs.
Improves concentration of mind.