Flow Drills are the beginning of your timing. It's a stepping stone to sparring. Wrestling and Jiujitsu a flow drill called The Pummel. Tai Chi uses a flow drill called Push Hands. Wing Chun uses a flow drill called chi sao. In the Outer Clinch we use a flow drill to develop The Cop's Russian, our most important arm control. We also use The Pummel from wrestling and flow drill known as hubud lubud from Filipino martial arts.