We all want it. We all need it. And when we don't get it, we feel it. While, on average, we spend a third of our lives sleeping, the amount of sleep needed varies from person to person, and over the course of our lives. When our personal sleep architecture is altered for any reason -- worries, arthritis pain, the effects of medications, late night espresso -- we know it. And when it doesn't resolve itself pronto, we seek to remedy it.
Sleep problems in the general population are estim