IF YOU WANT to be as fit and healthy as possible for as long as possible, then you need to think of yourself as an athlete. No, that doesn't mean you're suiting up for the Packers on Sundays, or even ...

When I was a teenager, I was—shockingly, I know—deeply nerdy. At a science-fiction convention, I bought a button that read, “186,282 miles/second: Not just a good idea, it’s the law.” It was poking ...