It's safe to say that "fitness" has come a long way over the years. It's not just about ripped physiques and six-packs. It's more mainstream than ever. The CrossFit movement is a phenomenon, everyone owns a Fitbit, has done a Spartan Race, and every piece of food is now marketed as "high in protein." It wasn't like this five, 10 years ago. And you would have probably never seen a workout video featuring a professional golfer, either.