Canadian visitors who watch much Canadian TV have probably seen a recent series of ads concerning children's health by now. They feature a parent talking about how their kid does some activity, and how that's plenty of physical activity. The ads then go to state that no, that isn't enough, that kids need 60 minutes of physical activity a day to be healthy. It seems to me that there's a simple way to help meet that goal for many kids. Have them walk to school.
No, it's not practical for all kids to walk to school. Some live too far away to do so. But I have the suspicion that lots of kids who could be walking to school don't. There sure seem to be a lot of cars parked in front of the typical school at the start and end of the school day. Get some of these kids walking from an early age and the chances of them being obese are likely to be greatly diminished. And frankly many adults would probably benefit from walking their kids to school if they just can't let them walk there alone.