The latest news from the Harvard Health Watch published an article on the importance of sleep. The reasons listed include your memory, mood, weight and metabolism, cardiovascular health and keeping disease at bay. All these are excellent reasons to get more sleep! From a skin perspective, sleep does wonders for the health and appearance of your greatest detoxifying organ. So it's not just beauty sleep!
http://www.health.harvard.edu/press_releases/importance_of_sleep_and_health