Sindo is an Indonesian form of martial arts characterized by a strong emphasis on breathing practices and internal balance. Once a practitioner's insides are strong and peaceful, they are able to concentrate on the physical actions associated with the form.

Sindo is a modern form of Indonesian silat which is a combination of practical self defence, combat martial art and the internal martial arts. Founded and lead by Kak Jimmy Thaibsyah who has trained in various martial arts since 1972.

The goal of sindo is to use a practical self-defense techniques, along with combat and internal martial arts to create a unified martial art.

http://en.wikipedia.org/wiki/Sindo_(Martial_art)