An eating disorder characterized by a refusal to eat enough food to maintain a reasonable body weight is

Anorexia Nervosa

Explanation:

It can be defined as the serous psychological condition in which is a  threatening eating disorder. Though its treatment id possible. This condition involves the threatening disorder in which the person has a fear of becoming fat.

It starts beginning during the teenage, early adulthood and even in the pre teens where the person is scared of eating food.

He or she thinks that they will become and suffer from obesity and thinking so makes them refuse the food that is ordered to them.

is this a genuine question or is it on a quiz or something? lol

explanation:

teens need 8-10 hours of sleep. it kind of depends on what time you get up. but prob around 10 or 11 p.m. or 11 or 11: 30 p.m.