Muscles worked on arm day (6)
I believe the answer is:
biceps
(Other definitions for biceps that I've seen before include "Muscle that flexes the forearm" , "Flexor muscle" , "Contractor" , "Upper-arm muscle" , "Weightlifters use them" .)
I believe the answer is:
biceps
(Other definitions for biceps that I've seen before include "Muscle that flexes the forearm" , "Flexor muscle" , "Contractor" , "Upper-arm muscle" , "Weightlifters use them" .)