How do you promote fast twitch bicep for pool break?

Answer 1

You don't. The bicep is not the primary muscle for a powerful break shot. A powerful breakshot relies on bringing the entire body into play, in the proper order from the feet to the wrist. The most powerful break accelerates a lightweight cue (the record is held using a 17 ounce cue) using the entire body and maintaining the cue in the same attitude to the cue ball during the stroke.

The power is from additives of acceleration and not from brute force.