Biceps, for example (7)

I believe the answer is:

muscles

(Other definitions for muscles that I've seen before include "Sinews" , "Contracting body parts" , "lot of beef" , "Vital factors" , "Through them bodily movement is effected" .)

I've seen this clue in The Telegraph.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.