Curls are the classic gym bro exercise, and a bicep flex is the most iconic way to, literally, flex on someone. But does it matter what type of curls you do? And are there non-curl ways to get some ...

The internet is a strange place — but sometimes, it’s actually not as strange as it seems. Such is the case with the “arm to foot”challenge currently sweeping the Chinese social network Weibo. What is ...

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