What is Insomnia?

After a late night of studying, I'm sitting in class and feel my eyes close and wake to find 10 minutes have passed. Oops, I hope I didn't snore.

About 30 percent of us have brief episodes of daytime sleepiness (like my example) which can be caused by a break in our regular sleep habits. And 10 percent have chronic sleep issues that occur four or more times a week. What is insomnia? Simply, it is the "inability to sleep".

Symptoms of insomnia can include fatigue, inability to focus or concentrate, poor memory, mood disturbances (for me: crabbiness), daytime sleepiness, low motivation or energy...