Health & Safety Why Sitting For Long Periods Can Effect Teens' Mental Health 6:39am February 17, 2020 by Rhitu Chatterjee Health Mental Health Children's Health Fitness & Nutrition Share URL copied to clipboard! Copyright 2020 NPR. To see more, visit https://www.npr.org. 300x250 Ad More Morning Edition World News In Syria, U.S.-backed Kurdish forces reach agreement with new government by Jane Arraf World News Morning news brief by A Martínez 300x250 Ad Support quality journalism, like the story above, with your gift right now. Donate