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Modern lifestyle factors frequently exacerbate these natural rhythms. Stress remains the primary biological trigger for early awakenings. When the brain perceives a state of ongoing stress—whether from financial pressure, relationship strain, or professional burnout—it disrupts the hormonal dance of sleep. Cortisol begins its morning rise prematurely, and melatonin, the hormone of darkness and rest, tapers off too soon. Other hidden triggers include the “rebound effect” of evening alcohol, which fragments deep sleep, and blood sugar fluctuations. A carb-heavy dinner can cause glucose to plummet in the early hours, prompting the body to release adrenaline to stabilize itself, which inadvertently wakes the brain.
