Ever try to go to bed without brushing your teeth? I just can’t do it. Some kind of awful little plaque alarm in the back of my head starts going off and refuses to stop until I’ve done something, even if it’s just smearing some toothpaste around in my mouth with one finger. Part of ...

Stop me if this is a nightmare you still have: You’re wearing those tiny, humiliating shorts. You’re faced with the climbing rope, or sometimes it’s the chin up bar. Whatever task it is, you struggle to pull yourself up with arms that seem terribly flabby and inadequate, and you get nowhere. And then your classmates, ...