The internet never needed an excuse to flex, but apparently, September just got one. “BICEPtember” is the latest made-up internet holiday to gain traction online, and thanks to a viral tweet that ...

Andrew J. Stillman is a freelance writer and yoga instructor exploring the world. Check him out at andrewjstillman.com or follow him @andrewjstillman on all the things.

At its simplest, BICEPtember is exactly what it sounds like: an excuse to post photos of your biceps and turn September into a month-long gun show. People, mostly men, responded with pictures of ...