Polyphasé

Polyphasé refers to a sleep schedule that involves sleeping multiple times within a 24-hour period, as opposed to the more common monophasic schedule of one long sleep block. The idea behind polyphasic sleep is that by breaking sleep into smaller segments, individuals can potentially reduce their total sleep time while still feeling rested and maintaining cognitive function. There are various proposed polyphasic sleep patterns, often named after individuals or concepts, such as the "Uberman" schedule (consisting of six 20-minute naps spread evenly throughout the day) or the "Everyman" schedule (which includes a longer core sleep period supplemented by several shorter naps). Proponents suggest that polyphasic sleep can lead to increased alertness, improved productivity, and more free time. However, scientific research on the long-term efficacy and health implications of polyphasic sleep is limited and often inconclusive. Many studies indicate that adhering to such schedules can be extremely difficult to maintain and may lead to sleep deprivation, cognitive impairment, and negative health effects for most individuals. The body's natural circadian rhythm is deeply ingrained, and disrupting it significantly can have adverse consequences. While some individuals might adapt to certain polyphasic schedules, it is generally not recommended for the general population without careful consideration and potential medical supervision.