At this time of year children are at school for all the daylight hours . How are they suppose to get in an hours exercise if not at school?
That's always been the case and yet child obesity is a relatively new thing.
When I was a kid there were hardly any overweight kids in my school, but then again I don't remember kids being met at the gate with snacks and driven around everywhere.
Also there were only 3 TV channels to choose from, no internet and games consoles weren't a thing in every home.
Schools can only do so much before parents learn to stop passing the buck.