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Afternoon Vigor

Meaning

Afternoon Vigor refers to the measurable or perceived peak in physical and cognitive alertness that occurs during the middle portion of the day, distinct from morning energy surges. This phenomenon is critical in understanding diurnal variation in human performance and endocrine responsiveness. We observe this pattern when the body navigates the post-absorptive state while managing the natural afternoon decline in circulating cortisol. Understanding this specific window informs scheduling for demanding tasks and assessment of adrenal reserve capacity.