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The impact of stress on sleep from "summary" of Why Zebras Don't Get Ulcers by Robert M. Sapolsky
Stress and sleep have a complicated relationship, and stress can significantly impact our ability to get a good night's rest. When we are stressed, our bodies release cortisol, a hormone that helps us deal with immediate threats. However, when stress becomes chronic, cortisol levels stay elevated, disrupting our sleep patterns. Cortisol has a natural daily rhythm, with levels peaking in the morning to help us wake up and gradually decreasing throughout the day to help us fall asleep. But when we are under chronic stress, cortisol levels may remain high at night, making it difficult to fall asleep or stay asleep. Furthermore, stress can also trigger the rel...
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