Add Yahoo as a preferred source to see more of our stories on Google. Considering a new fitness challenge? Experts say there are benefits — but it's not for everyone. (Getty Creative) If you’re not a ...
The internet loves to coin a trendy new fitness challenge—12-3-30, 75 Hard, 3-2-1, the list goes on. And while some workout methods are more fluff than facts, others are rooted in real exercise ...