The thinnest kids eat the most; the fattest eat the least. It would appear that exercise is key. So, hey, make sure your kids are getting some exercise. The world used to provide lots of opportunities for kids to be active; these days that hour per day of rigorous activity which is recommended might be hard to pull off.

Randall also comments on the exercise-unfriendliness of the adult world:

We need easier ways to mix exercise into our work schedules. I will repeat what I most want to see: Businesses should add exercise bicycles and stair stepper machines to meeting rooms. Then people called into status meetings, design meetings, and training classes could get exercise while doing meetings.

Working from home from time to time, I find that it's a lot easier to stand up and move around during conference calls than it would be at the office. Plus, I'm able to dash off downstairs for a half-hour workout. It's one of the big advantages of working from home, really.