The Guardian – Nicola Davis
Less than 10% of British teenagers meet the recommended guidelines for sleep, exercise and screen time, research has revealed. According to 24-hour movement guidelines developed by Canadian researchers, children aged between five and 17 should spend an hour a day doing moderate to vigorous exercise, no more than two hours a day in front of a screen, and get at least eight hours’ sleep a night.
https://www.theguardian.com/society/2019/aug/26/uk-teens-exercise-screen-time-guidelines