We find mudras used in Bharata natyam and other forms of dance. But it seems they have extensive health benefits too:
http://www.hinduonnet.com/thehindu/mp/2 ... 420100.htm
This article led me to a search of mudra related sites, and I came across several that explain mudras and their healing powers. An example: http://www.jainworld.com/shrutpragya/pos1.html
It's a fascinating world that I at least wasn't aware of before. Has anyone here benefited from the practice of mudras?
And which mudras are used more often in Bharata natyam?