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    GlossarySleep-Wake Cycle

    The sleep-wake cycle is the natural, recurring pattern of sleep and wakefulness that is regulated by the body's internal clock, known as the circadian rhythm. This cycle plays a crucial role in overall health, including hair biology, as inadequate sleep can lead to increased stress levels and hormonal imbalances, both of which are linked to hair loss. Key distinguishing characteristics of the sleep-wake cycle include its phases, such as REM and non-REM sleep, and its influence on various physiological processes, including hair follicle cycling and regeneration. Understanding this cycle is essential for addressing hair loss issues, as improving sleep quality may positively impact hair health.

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