Fewer than one in ten British teenagers meet the recommended guidelines for sleep, exercise and screen time, a study has suggested.
Children aged between five and 17 should spend an hour a day doing moderate to vigorous exercise and a maximum of two hours a day in front of a screen and get at least eight hours of sleep a night, according to guidelines developed by Canadian researchers.
Researchers found that only 9.7 per cent of 14-year-olds in Britain met all three recommendations while 76.9 per cent of teenagers spent more than two hours a day in front of screens.
Mark Hamer, a professor of sport and exercise medicine at University College London and co-author of the research, said evidence suggested that levels of physical