godan verb (-mu), intransitive verb
get worked up; get overly eager; be too fired up
Describes a state where one becomes excessively enthusiastic or tense, often leading to mistakes or burnout. Implies a loss of composure due to eagerness.
試合前に気負い込んで、実力を出せなかった。
I got too worked up before the match and couldn't perform to my ability.
Don't get too fired up; just do it like you always do.