I am so jealous of you all. DS 4.5 is lights out 7.15, up at 5.30. Every single day (except when they put the ruddy clocks back in Winter and he gets up at 4.30 instead). Sometimes if we are really lucky he flakes out till, ooo, 5.45.
He goes swimming straight after school 2 days a week, goes to the park after school two days and does tons of outdoor stuff at the weekends, and we bung him full of carbs before bedtime too. Makes not an iota of difference.
You lot don't know you're born