Infographic still (IMAGE) University of Washington Caption New research shows that on nights before a full moon, people sleep less and go to bed later on average. The pattern's ubiquity, which was observed in urban and rural settings, may indicate that our natural circadian rhythms are somehow synchronized with the phases of the lunar cycle. This visualization is interactive: https://tableau.washington.edu/views/LunarCycleandSleep/LunarCycle Credit Rebecca Gourley/University of Washington Usage Restrictions Must include credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.