Sleep

All humans spend about one-third of their lives asleep. Despite the ubiquitous nature of sleep, the science of sleep is still in its infancy, though it is growing rapidly. Many studies have reported ways in which sleep is related to health and longevity; concurrently, research is showing that [Page 1033]problems with sleep can be ameliorated with behavioral and medical interventions. It is clear that while it is possible to have good sleep but be in poor health, it is difficult to have poor sleep and be in good health. Additionally, sleep is a health behavior, in that (a) there is a substantial behavioral component that is under voluntary control; (b) this behavior is related to overall health in much the same way as other health ...