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The practice of consulting biorhythms was popularized in the 1970s by a series of books by Bernard Gittelson, including Biorhythm—A Personal Science, Biorhythm Charts of the Famous and Infamous, and Biorhythm Sports Forecasting. Gittelson's company, Biorhythm Computers, Inc., made a business selling personal biorhythm charts and calculators ...
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 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."
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]
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]
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.
The biorhythms graph shows the basic cycles, physical (23 days), emotional (28 days) and intellectual (33 days), from the day of the person's birth. Spanish La gráfica de los biorritmos muestra los ciclos básicos, físico (23 días), emocional (28 días) e intelectual (33 días), desde el día de nacimiento de la persona.
The Journal of Biological Rhythms is a bimonthly peer-reviewed scientific journal that covers chronobiology or any rhythms, especially biological rhythms with a special emphasis on seasonal and circadian rhythms.