via wionews: Our sleep patterns are affected by the pushes and the pulls of moon tides, as per the latest study published in Science Advances. The findings of the study reflect that in the days leading up to the full moon, people go to bed later and sleep less. A lunar cycle takes 29.5 days to complete. Changes in each participant's sleep duration across the lunar cycle ranged from 20 to more than 90 min and did not differ considerably between groups. The participants of the study live in environments ranging from a rural setting with and without access to electricity in indigenous Toba/Qom communities in Argentina to a highly urbanised postindustrial setting in the United States. Sun and moon data for the Ingeniero Juárez region through the dates of recording were obtained from NASA's Jet Propulsion Laboratory HORIZONS Web-Interface It is primarily moonlight available during the first hours of the night that is more likely to drive changes in the onset of sleep. In contrast, moonlight