Each month our editorial team sifts through hundreds of papers and curates notable findings—for practitioners and informed readers who want to stay current with the evidence. Subscribe to the monthly Research Digest for expert analysis and concise summaries of key papers.
This review looked at 41 studies with 92,340 adults to see how sleep timing and day-to-day regularity relate to health. It found that going to bed or waking up later, and having more variable sleep patterns, were generally linked to worse health. Social jetlag was linked to worse health, while…
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,…
