melatonin and cortisol

Early Dinners, Morning Light, and the Biology of Better Sleep

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Modern life disrupts natural sleep rhythms with late meals, bright screens, and stress. Science shows that morning light resets our biological clock, while evening darkness and lower cortisol levels promote restful sleep. Small lifestyle changes—like earlier dinners and less nighttime screen use—can significantly improve sleep quality and daytime energy.

The Early-Dinner Advantage: How Morning Light and Meal Timing Can Reset Sleep and Energy

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Research shows that aligning meal times and morning light exposure with our internal clock can improve sleep and energy. Eating early and getting sunlight in the morning help regulate hormones like cortisol and melatonin, while late meals and nighttime light disrupt sleep and leave us feeling tired yet alert.