> For one thing, Wilkin believes he has discovered another form of "compensation", similar to Timothy Church's discovery that we reward ourselves with food when

> For one thing, Wilkin believes he has discovered another form of "compensation", similar to Timothy Church's discovery that we reward ourselves with food when we exercise. Looking at the question of whether it was possible to change a child's physical activity, Wilkin's team put accelerometers on children at schools with very different PE schedules: one which offered 1.7 hours a week, and another that offered nine hours. > "The children did 64% more PE at the second school. But when they got home they did the reverse. Those who had had the activity during the day flopped and those who hadn't perked up, and if you added the in-school and out-of-school together you got the same. From which we concluded that physical activity is controlled by the brain, not by the environment – if you're given a big opportunity to exercise at one time of day you'll compensate at another." http://www.theguardian.com/lifeandstyle/2010/sep/19/exercise-dieting-public-health http://www.theguardian.com/lifeandstyle/2010/sep/19/exercise...