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Sleep TipsDeep Sleep and How to Get It While the amount of time one spends asleep is important, the quality of that sleep also plays a vital role in health. The American Sleep Association reports that a cycle of sleep consists of five distinct stages and that stages three and four represent "deep sleep." This kind of deep sleep is associated with benefits such as improved cognition and memory — and there are many simple ways to reap these benefits by getting a better night's sleep.
