You sitting down? Experts say it’ll kill you (NBC News)

More coverage on the dangers of sedentary behavior, even to people who exercise regularly. While the benefits of regular prolonged exercise are still very much valid, that form of exercise doesn’t prevent the changes in blood chemistry and other reactions of the body to prolonged inactivity. The article quotes Tim Armstrong, a physical activity expert at the World Health Organization, who said that people who exercise every day but still spend a lot of time sitting might get more benefit from their exercise if it were spread across the day instead of being all at one time.

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