Naṭarājāsana or Lord of the Dance Pose, is an asana

Asana

Asana is a body position, typically associated with the practice of Yoga, originally identified as a mastery of sitting still, with the spine as a conduit of biodynamic union...

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Etymology

The name comes from the Sanskrit words nata meaning "dancer", raja meaning "king", and asana (आसन) meaning "posture" or "seat". Nataraja

Nataraja

Nataraja or Nataraj , The Lord of Dance; Tamil: கூத்தன் ;Telugu:నటరాజ is a depiction of the Hindu god Shiva as the cosmic dancer Koothan who performs his divine dance to destroy a weary universe and make preparations for god Brahma to start the process of creation...

 is one of the names given to the Hindu God Shiva

Shiva

Shiva is a major Hindu deity, and is the destroyer god or transformer among the Trimurti, the Hindu Trinity of the primary aspects of the divine. God Shiva is a yogi who has notice of everything that happens in the world and is the main aspect of life. Yet one with great power lives a life of a...

in his form as the cosmic dancer.

Description

This is a balance pose that strengthens the legs. It also is a full body stretch which engages the shoulders, chest and abdomen, strengthens the thigh and calf muscles, knees and ankles, hips and spine, and develops concentration and grace.

This aesthetic, stretching and balancing pose is used in Indian classical dances.