The type of fiber that has a powerful burst is

The type of fiber that has a powerful burst is the "fast twitch muscle fiber."

Explanation:

The muscle fibers that are made in the human body. Two of main types are  the fast and slow muscle fibers. They are categorized in two groups "type 1 " and "type 2" and by the sub-categories "type IIa" and "type IIb."

The fast twitch muscle type IIb is the one that produces the most powerful burst. These muscles get their speed by using anaerobic metabolism to create their energy. This muscle will tire quickly and will need rest since it performs so quickly.

answer: hang out with someone else or occupy your mind with something else. : )