Today, most people didn't value sleep that much. They remain awake as long as they can and do unnecessary things like playing online games, chatting, texting, phone calling someone, watching movies and etc. And after that, they ended up sleeping in the couch or in front of the computer without turning off the television or PC. They didn't pay much attention to the negative effects of sleeping late. After reading this, you will realize that sleep should not taken for granted.