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Intrinsic Sleep Need

Meaning

Intrinsic Sleep Need is the genetically determined, non-negotiable amount of sleep an individual’s body requires to maintain optimal cognitive function, physiological homeostasis, and metabolic health. This requirement is distinct from actual sleep duration, which can be influenced by lifestyle and environment, representing instead the biological imperative for restorative sleep. While the average adult need is approximately 7 to 9 hours, genetic factors, such as specific gene mutations, can dictate a naturally shorter or longer requirement. Understanding one’s intrinsic sleep need is fundamental for preventing chronic sleep debt and maximizing longevity and wellness.