(Image credit: Xia Yuan via Getty Images)
We spend a significant portion of our lives asleep. This may seem like an evolutionary disadvantage, since sleep leaves us motionless and potentially susceptible to attack for hours at a time — but research shows that we have many important physiological processes that depend on sleep, and sleep disturbances are associated with a variety of health problems, including an increased risk of death.
In addition, we often dream while we sleep. Thus, sleep provides us with experiences that we do not have access to while awake.
Test your knowledge of sleep science and the dreams we experience while we sleep in the quiz below. Be sure to sign in so your score appears on the leaderboard; hints are available if you click the yellow button, and let us know your score in the comments.
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Nicoletta LaneseSocial Links NavigationChannel Editor, Health
Nicoletta Lanese is the Health Editor at Live Science and previously served as the site’s News Editor and Staff Writer. She holds a degree in science communication from the University of California, Santa Cruz, and degrees in neuroscience and dance from the University of Florida. Her writing has appeared in The Scientist, Science News, Mercury News, Mongabay, and Stanford Medicine Magazine, among other publications. Based in New York City, she is an avid dancer and performs in the work of local choreographers.
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