U of M study: Teen sleep linked to being more active

(MNN)-A new study from the University of Minnesota suggests teens who get more sleep aren’t any less active during the day. School of Public Health researcher Kayla Johnson says parents often worry that a later school start means less time for exercise – but the data shows the opposite. She says the results really show teens who sleep more actually spend less time sitting around. The study followed 260 ninth graders and found that more sleep and later sleep schedules were linked to more physical activity, not less. Johnson says the findings support the growing push to delay high school start times, calling it a needed public-health step as teen sleep continues to decline.