We sleep for half of our lives. Think about it, half of our lives we are sleeping. For humans and other mammals, regular sleep is essential for survival. Still, there are those people who swear that they require only 4 or 5 hours a night. Not Me! I sleep, and I sleep hard. My mother tells a story about a car crash that happened at 4AM right outside my window when I was 4 or 5 years old. There was a whole lot of noise, commotion, emergency vehicles and everything else that goes along with a car accident. I don’t exactly know what happened… I was sleeping! In fact, before writing this, I had to call my mother to make sure that it really happened. I don’t remember, I was sleeping.