Although male kangaroos do appear to flex their muscles to show off their impressive figures, researchers in a 2013 study said it is not currently possible to determine whether or not such behavior is ...

It’s not just the men who flex their biceps to impress the opposite sex — kangaroos do it too! It’s not just the men who flex their biceps to impress the opposite sex — kangaroos do it too!

DOES Mario Lopez suffer from biceps envy? This Disease of the Vain usually strikes hunky guys who come into close contact with even hunkier guys. They see a set of biceps larger then theirs, and they ...

Any gym-going female human knows just how much men like to show off their muscles. But it turns out that it’s not just male humans who think that flexing their biceps at ladies is an effective ...

If that was CC Sabathia with a sore biceps, then the Mets don’t want to see the big left-hander when he’s healthy. Sabathia shook off any and all questions about his left arm with a masterful ...

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 ...