Pak Sao
This is an exercise used to target points in motion. The first target that is open is struck. The drill can go at any speed that the participants are ready for. This video is at a little more of an advanced level. Each and every one of the moves is designed to be a finishing move, but for the sake of keeping it an ongoing exercise control is used to keep it going for an unlimited time, allowing you to learn how to go with the flow of an attack.