My boys (now in their 40’s) cottoned on to ‘night starvation’ when they were of primary age which led to frequent little trips downstairs at 9:30pm demanding a snack to ward off night starvation. 
That sort of advertising still goes on, though, with the likes of Toddler Formula and Growing Up milk being marketed to us.
Evolution - BBC2, Chris Packham
50 Greatest books of all time.



