Is Swimming Really as Good Exercise — and as “Low Impact” — as They Say It Is?

What, you think Michael Phelps has that ripped V-shaped torso by coincidence? Swimming is the best all-inclusive form of exercise out there; it works almost every muscle group in the body, increases blood flow to the brain, and burns 750 calories or more per hour — though, if you’re swimming for an entire hour, you are a machine.

And yes, it’s easy on your body, yielding no real stress of any kind when it comes to joints and bones. The water accommodates nearly all your weight when you’re submerged, meaning the risk of injury is slim — unless, you know, you drown.