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Fisher-Peartree t1_ix39o4l wrote

Reply to comment by [deleted] in Study demonstrates that how effectively an individual awakens in the hours following sleep is associated four independent factors: sleep quantity/quality the night before, physical activity the day prior, a breakfast rich in carbohydrate, and a lower blood glucose response following breakfast. by the_phet

Have you read the article before sharing it? The researchers found what u/helm wrote: “Mood, specifically levels of daily happiness, together with the age of the individual, were the two most significant predictors of trait alertness (Fig. 5b, c), such that higher levels of happiness and increasing chronological age were each positively predictive of higher inherent levels of alertness (r = 0.67, p < 0.001 and r = 0.345, p < 0.001 respectively; Supplementary Figs. 3 and 4, with p-values adjusted for multiple comparisons using the Holm-Bonferroni method). Just below Figure 5.

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