Students refining the starting speed of their backfists

At last Saturdays Karate class, students refine the starting speed of their backfists. Starting from a ready position, completely still, the partner will move the pad IF they see you telegraph your strike. Then give you feedback; What they saw move first. 

Lesson: Move the small parts first (fist/arm) then the larger parts (shoulders/body) follows. 

Lesson: The goal is to throw the technique in a way that your partner is unable to perceive it.