Women sleep longer than men, going to bed a bit earlier than men and waking up a bit later. Older people likewise sleep earlier than younger people, oftentimes dependent on solar cues or the time of sunrise and sunset. Moreover, the most well-rested people come from the Netherlands, while those living in Singapore and Japan log the shortest sleep duration.
These interesting findings are a result of an equally interesting way of analyzing the sleep habits of people – through the use of a mobile phone app known as ENTRAIN. It comes from the scientific term, “Entrainment,” which refers to “fully adjusting to a new time zone.”
