National Sleep Foundation RECOMMENDED SLEEP 4 HOURS OF SLEEP 7-8 OLDER ADULT i 65 years YOUNG ADULT 18-25 years TEENAGER ¡4-17 years SCHOOL AGE 6-13 years PRESCHOOL 3-5 years Recommended Range Not Recommended,сон,инфографика,галилео (сообщество),#галилео,разное