It may be tempting to let your kids stay up late playing on their #smartphone, but using devices before bed may contribute to children's sleep and nutrition problems, according to researchers from the #PennState College of Medicine. More--> https://t.co/F86YqnlLMP pic.twitter.com/FfUTfOIkfw

— Penn State World Campus (@PSUWorldCampus) 26 de diciembre de 2017