For many, it’s an eerie pattern: the clock strikes 3:00 a.m., and like clockwork, they’re wide awake. No matter how tired they were the night before or how long they stayed in bed, their body seems to ...

To say it happens like clockwork is an understatement-it is clockwork, literally: Every night, or more accurately, early morning, you find yourself wide awake, staring pleadingly at the alarm clock, ...