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  2. Biorhythm (pseudoscience) - Wikipedia

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

    Theories published state the equations for the cycles as: physical: ⁡ (/), emotional: ⁡ (/), intellectual: ⁡ (/), where indicates the number of days since birth. Basic arithmetic shows that the combination of the simpler 23- and 28-day cycles repeats every 644 days (or 1 3 ⁄ 4 years), while the triple combination of 23-, 28-, and 33-day cycles repeats every 21,252 days (or 58.18+ years).

  3. File:Biorhythm Chart.svg - Wikipedia

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

    Biorhythms chart of a person born on March 2, 1994. Ultra Biorhythms App by ByteRiot: 08:14, 29 October 2018: 600 × 400 (35 KB) Tungpham42:

  4. Biological rhythm - Wikipedia

    en.wikipedia.org/wiki/Biological_rhythm

    Ultradian rhythms, which are cycles shorter than 24 hours, such as the 90-minute REM cycle, the 4-hour nasal cycle, or the 3-hour cycle of growth hormone production. Tidal rhythms, commonly observed in marine life, which follow the roughly 12.4-hour transition from high to low tide and back. Lunar rhythms, which follow the lunar month (29.5 ...

  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. Chronobiology - Wikipedia

    en.wikipedia.org/wiki/Chronobiology

    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]

  7. Biorhythm - Wikipedia

    en.wikipedia.org/wiki/Biorhythm

    Biorhythm may refer to: Biorhythm (pseudoscience), developed by Wilhelm Fliess in the 19th century; Biological rhythm, repetitive cycles that occur in biology ...

  8. Zeitgeber - Wikipedia

    en.wikipedia.org/wiki/Zeitgeber

    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.

  9. Journal of Biological Rhythms - Wikipedia

    en.wikipedia.org/wiki/Journal_of_Biological_Rhythms

    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.