If you're on FLEXonline, then you obviously work out. And if you work out, then chances are, you know at least one of these gym stereotypes – "The Screamer", "The Selfie Guy", "The Singer", "The Naked Old Guy",  "The Sweaty Guy"…well, you get the idea. Check out this video by Dude Perfect for the funniest 6 minutes of your day. #FlexFunFriday