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Both the theoretical underpinning and the practical scientific verification of biorhythm theory are lacking. Without those, biorhythms became just another pseudoscientific claim that people are willing to accept without required evidence. Those pushing biorhythm calculators and books on a gullible public are guilty of making fraudulent claims.
Biorhythm may refer to: Biorhythm (pseudoscience) , developed by Wilhelm Fliess in the 19th century Biological rhythm , repetitive cycles that occur in biology, studied in the science of chronobiology
The nasogenital theory was briefly quite popular in late 19th century medical circles, but within a decade disappeared from the medical literature. [6] Most scientists who have studied the question believe that the biorhythms theory has no more predictive power than chance [7] and consider the concept an example of pseudoscience. [8] [9] [10] [11]
The best studied rhythm in chronobiology is the circadian rhythm, a roughly 24-hour cycle shown by physiological processes in all these organisms.The term circadian comes from the Latin circa, meaning "around" and dies, "day", meaning "approximately a day."
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A zeitgeber (/ ˈ (t) s aɪ t ɡ eɪ b ər, ˈ z aɪ t-/ (T)SYTE-gay-bər, ZYTE-, German: [ˈtsaɪtˌɡeːbɐ]) is any external or environmental cue that entrains or synchronizes an organism's biological rhythms, usually naturally occurring and serving to entrain to the Earth's 24-hour light/dark and 12-month cycles.
Overview, including some physiological parameters, of the human circadian rhythm ("biological clock").. Chronobiology is a field of biology that examines timing processes, including periodic (cyclic) phenomena in living organisms, such as their adaptation to solar- and lunar-related rhythms. [1]
The journal was established in March 1986 as the official publication of the Society for Research on Biological Rhythms with Benjamin Rusak as first editor-in-chief; he served from 1986 to 1994.