Increasing the amount physical activity kids engage in at school doesn’t mean they’ll be more active out of school. In fact, just the opposite may be true, according to study findings presented at the European Congress on Obesity in Amsterdam in May 2009. “We hypothesized that a lot of physical education at school would inculcate a habit,” Dr. Terence Wilkin told Reuters Health. “We found it made no difference. What some children lack in school, they make up for — with remarkable precision — out of school.”

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