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2 papers
This review combined results from 10 intervention studies to see if physical activity programs change cortisol (a stress hormone) and sleep in adults. The pooled results found lower cortisol after activity programs and some improvement in sleep quality. The authors say the evidence is moderate for cortisol and low for…
This study used data from 24,250 U.S. users of the WHOOP wearable (74.5% male, mean age 37.6 years) collected from May 1, 2020 to May 1, 2021. Compared to typical days, most U.S. public holidays, holiday eves, and Daylight Saving Time transitions showed clear changes: people tended to sleep longer,…
