Those 26.2, or worse the 13.1, bumper stickers make us want to ram our cars into them. They're almost as bad as Baby On Board stickers. We get it, you ran for a really long time. Go you. But we're ready for a new fitness trend, and we're pretty sure it'll be Stand Up Paddleboarding. Maybe it's just because we have no upper arm strength, but propelling ourselves forward while standing on a (very large) surfboard seems like hard work. Not only is it an intense workout, but the races are becoming more and more frequent, meaning they could easily overtake the marathon craze. Plus, who wants to run 26 miles in July? We'll take the water sport any day.