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  2. File:Biorhythm Chart.svg - Wikipedia

    en.wikipedia.org/wiki/File:Biorhythm_Chart.svg

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses ...

  3. Biorhythm (pseudoscience) - Wikipedia

    en.wikipedia.org/wiki/Biorhythm_(pseudoscience)

    Gittelson's company, Biorhythm Computers, Inc., made a business selling personal biorhythm charts and calculators, but his ability to predict sporting events was not substantiated. [ 6 ] Charting biorhythms for personal use was popular in the United States during the 1970s; many places (especially video arcades and amusement areas) had a ...

  4. Circadian rhythm - Wikipedia

    en.wikipedia.org/wiki/Circadian_rhythm

    A circadian rhythm (/ s ər ˈ k eɪ d i ə n /), or circadian cycle, is a natural oscillation that repeats roughly every 24 hours.Circadian rhythms can refer to any process that originates within an organism (i.e., endogenous) and responds to the environment (is entrained by the environment).

  5. File:Biorhythm-EN.svg - Wikipedia

    en.wikipedia.org/wiki/File:Biorhythm-EN.svg

    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.

  6. Zeitgeber - Wikipedia

    en.wikipedia.org/wiki/Zeitgeber

    The subjects prepared their own meals and took their own samples, so there were no social interaction cues either. Humans therefore adjust from 24.9 hr internal rhythm to the 24-hour day. There are many different zeitgebers, and their relative influence on an individual at any given time depends on a number of factors, time of day the zeitgeber ...

  7. Circadian clock - Wikipedia

    en.wikipedia.org/wiki/Circadian_clock

    In vertebrates, the master circadian clock is contained within the suprachiasmatic nucleus (SCN), a bilateral nerve cluster of about 20,000 neurons. [10] [11] The SCN itself is located in the hypothalamus, a small region of the brain situated directly above the optic chiasm, where it receives input from specialized photosensitive ganglion cells in the retina via the retinohypothalamic tract.

  8. Biological rhythm - Wikipedia

    en.wikipedia.org/wiki/Biological_rhythm

    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."

  9. Do-it-yourself biology - Wikipedia

    en.wikipedia.org/wiki/Do-it-yourself_biology

    Preparation of a biohacking kit for a biology workshop in Popular Education in a café in Rennes in 2020. Do-it-yourself biology (DIY biology, DIY bio) is a biotechnological social movement in which individuals, communities, and small organizations study biology and life science using the same methods as traditional research institutions.