BEDTIME STORIES // An alarming trend: Kids, teens losing out on sleep

On a good night, Etan Harmelech gets only five hours of sleep.

And on a good day, he makes it up in chemistry class.

"It's impossible not to fall asleep," says Harmelech, 16, aHighland Park High School sophomore. "You're not involved in thediscussion, and you're tired already."Harmelech shrugs and glances around the table at several of hisclassmates, who are nodding knowingly at his tales of nodding off.Sara Feinstein, 16, once fell asleep at her teacher's desk whilewaiting in line to talk to him.Tricia Maharaj, 17, chronically fights heavy eyelids afterlunch."At least once a day, I'll fall asleep in class," she says. "Ifell asleep on the floor (at home) for …