It’s 3 a.m. You’re scheduled to give a big presentation at eleven, only eight hours away. You desperately need to sleep so you will be rested and alert when your big moment comes, but here you are staring wide eyed at the bedroom ceiling. Your mind is agitated and your body won’t relax. The harder you work at getting to sleep, the wider awake you are. You’ve already tried counting sheep, watching the late show, and making yourself a snack-all to no avail. In desperation you reach for a sleeping pill.This is a common scenario in the United States, where approximately one third of all adults suffer from some type of sleep disorder. Insomnia, the most common type by far, is clinically defined as the inability to fall asleep after lying in bed for thirty minutes or the inability to sustain sleep for more than a few hours without waking. Practically speaking, however, insomnia can be defined as unrestful sleep.We’ve all experienced some form of insomnia at particularly stressful times in our lives. It’s normal to have trouble sleeping at these times, and it usually passes after a night or two. Insomnia is a problem only when it becomes chronic. Although it is associated with certain physical illnesses-arthritis, heart failure, and chronic lung disease, for example-most experts agree that insomnia is a symptom, not an illness in itself. So what is it a symptom of? There are two answers-the ancient and the modern. At first glance they seem completely different, but a closer look reveals some remarkable similarities.Continue Reading