Teenagers have long been told that being active and taking part in sports is good for their health. But new research suggests that too much sport for teenagers could negatively impact their well-being just as much as too little sport.
The US Department of Health and Human Services recommends that young people aged between 6 and 17 years carry out at least 60 minutes of physical activity a day, equating to 7 hours a week.
But researchers from Switzerland and Canada say their study, published in the BMJ journal Archives of Disease in Childhood, suggests that 14 hours of physical activity a week is best for promoting good health in teenagers. However, they found that more than 14 hours appears to be detrimental to their health.