Nataraja is one of the names of the Hindu god Siva, the Cosmic Dancer.
1. Stand straight, in Tadasana.
2. Inhale as you bend your left leg back, grasping the foot or ankle with your left hand. Exhale.
3. Balance yourself, and on the next inhalation raise and extend the right arm, keeping it near your head.
4. Balance and breathe.
5. Repeat on the other side.
Note: This is an advanced balancing pose.