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Sleep-Wake Cycle Stability

Meaning

Sleep-Wake Cycle Stability denotes the consistent and predictable timing of an individual’s main sleep episode and their period of wakefulness, reflecting a well-entrained and robust circadian rhythm. High stability is characterized by minimal day-to-day variability in sleep onset and wake-up times, which is essential for synchronizing the body’s peripheral clocks and optimizing the rhythmic release of hormones. Instability leads to chronic jet lag and metabolic disruption. It is the measure of rhythmic coherence in the 24-hour cycle.