A flexed bicep, universally representing physical strength, determination, or encouragement ('you've got this!'). It's a favorite for fitness posts, motivational messages, or celebrating any kind of effort and resilience, and is one of the emoji with the broadest range of skin-tone customization options adopted early on.
Keywords: arm, beast, bench, biceps, bodybuilder, bro, curls, flex, gains, gym, jacked, muscle, press, ripped, strong, weightlift