I get my 9 year old son out every day for at least an hour, hiking, playground, biking, swimming. 3-4 hours on weekends. Except during the dead of winter like now.

I focus more on free play in the house. Action figures, nerf guns, wrestling. This is his least active time.
Just one sport, fencing, which is a moderate work out but only for an hour a week.
My son needs free unstructured time more than anything. So I don't schedule lots of sports.