Sikh/Indian internal martial art This particular clip of Shastar Vidiya seems to be practicing just some external drills, but some folks have reported seeing videos that demonstrate more of an internal connection. I'll see if I can dig up some of that footage.
It would be interesting to find out whether there is a direct historic link between Indian and Chinese/Japanese internal martial arts, especially given that esoteric Buddhist and Hindu practices were carried East to China and beyond.
Shastar Vidiya
I Liq Chuan