Grammy Award-winning NFL WAG Ciara flexed her buff biceps on Instagram and received a nod of approval from her hubby, Pittsburgh Steelers quarterback Russell Wilson. Pittsburgh Steelers quarterback ...

Halle Berry stunned her fans by flexing her biceps in her latest Instagram post, which caught them off guard. Last month, Berry had stirred up excitement with her bikini photos in a scenic sandy ...

Tim McGraw started it, but soon Garth Brooks was on Twitter snapping a flex selfie. Could Florida Georgia Line be next? Country stars, athletes and celebrities nationwide are flexing their biceps for ...

Azzi Fudd has been flexing all summer long. Whether it’s her fire fits, her dance skills, her relationship status, or just her biceps, she’s flexing. The 22-year-old UConn Huskies star helped lead the ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Curls are the classic ...