Up until this point you have used a leg swing to reset your frame and shoulder-walked to weaken the crossface arm. Your opponent is likely to be stubborn, however, and refuse to completely release the grip. If you are in the gi, your opponent may even cling to your lapel. This biceps punch will help you to create the space you need to execute the sit-up escape. As you learn the sit-up escape system, you might find yourself using the bicep punch to re-guard, and that’s perfectly fine too.