I would like to know the Japanese verb for "to flex", but I haven't found much information and the few dictionary options I have found are a bit unclear to my understanding so I think that some people here can clear this up for me.
"To flex" one's muscles as when bodybuilders flex their biceps and compare how big and ripped they look.
Example sentences: He flexes his bicep to show how big it is. Bodybuilders flex their muscles to impress the audience.
Answers very appreciated!