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Fasting Masterclass

The Proof with Simon Hill

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Exploring the Link Between Circadian Rhythms and Meal Timing

Circadian rhythms function as an anticipatory system that regulates various bodily processes, including digestion, hormonal release, and heart rate, based on the time of day. These rhythms enable the body to prepare for different activities, such as breaking down calories during sleep or managing cortisol levels upon waking. Every cell in the body has its own clock, synchronized by environmental cues like light and food. The super chiasmatic nucleus in the brain acts as the central clock, integrating light signals and coordinating the timing of physiological functions across the body. Meal timing directly affects these circadian clocks; regular eating patterns help the body predict food availability, optimizing enzyme production for digestion and overall cellular function. Conversely, eating at inappropriate times—such as late at night—disrupts insulin secretion and misaligns cellular clocks, which can compromise metabolic processes and overall health. Thus, aligning meal times with natural biological rhythms is crucial for maintaining health and optimal function.

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