Sleep duration and timing are associated with next-day physical activity: Insights from two large-scale wearable sensor studies

Proceedings of the National Academy of Sciences, Volume 122, Issue 27, July 2025. <br/>SignificancePhysical activity (PA) has been widely recommended to improve health. Uncovering upstream determinants of PA can help identify useful, modifiable targets to increase PA participation. We investigated whether sleep duration and sleep timing …