A biorhythm is a hypothetical cycle in physiological, emotional, or intellectual well-being or prowess. “Bio” pertains to life and “rhythm” pertains to the flow with regular movement. Biorhythms theory has no more predictive power than chance and has been labeled a pseudo-science by skeptics. The equations for the curves are:

  • physical: sin(2πt / 23)
  • emotional: sin(2πt / 28)
  • intellectual: sin(2πt / 33)
  • intuitive: sin(2πt / 38)

Where t indicates the number of days since birth. Source: Wikipedia: Biorhythm


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