There are many people who fall asleep easily, in fact in any situation where they sit still too long they may doze off to sleep. You may see them sleep in their cars at red lights, slumped over books in the library; some fall soundly asleep in the movies and snore.
Students sleep in class.
  One man had what he thought was a hot date, but he went to sleep on the date. Another went to sleep on his wedding night. Did you hear about the graduate that was sound asleep when they called his name to receive his diploma?
  The National Sleep Foundation says that all of us have what is known as basal sleep and sleep debt. Basal sleep is the amount of uninterrupted quality sleep your body needs to function properly. Sleep debt is the amount of sleep is owed to your body. Whenever we rob our bodies of the sleep they need that amount is recorded in the sleep debt section of our brain.
   Every time we sit still or become idle for even a short period of time, sleep debt comes to collect; unfortunately it can come when you need to be alert most: when you are taking a test, need to think, driving a car, or studying. You try hard to stay awake, but sleep debt must be paid and you nod off; even doze.
  Sometimes people doze because medications make them sleepy, but usually its sleep debt collecting for all of those all-night movies, long hours on the internet, late-night parties, and double shift revolving door jobs.
  The sleep debt man must be paid; he may come to collect when you are at worship in church!
  We are fortunate however, because the God we serve neither slumbers or sleeps; he's always on the job.