Sleep is an important part of our lives because this is when our body rests and recovers from our daily activities. We need to have at least eight hours of sleep to keep our bodies healthy and stress free. Any less that that could less to several bad effects. Unhealthy sleeping habits can cause dark circles around eyes, pimples, weak immune system and a whole lot more of ugly and bad stuff. So make sure that you give yourself enough time to sleep to stay beautiful and healthy.