Energies · Biorhythm
Biorhythm, read with care.
Physical, emotional and intellectual cycles, a 19th-century curiosity, presented honestly as exactly that.
The pieces
To read in this practice
The pillar content is on its way. This practice is being written, by hand and sourced.
The questions people ask
Short answers, straight to the point.
- What is biorhythm?
- Three curves that start from the day you were born and each wave at their own pace: 23 days for the physical, 28 for the emotional, 33 for the intellectual. Each day, every curve is high, low, or crossing the zero line. A portrait of your energies in three sine waves, readable at a glance.
- Is biorhythm serious?
- Let's be frank: it's a curiosity born in the nineteenth century, in the notebooks of the Berlin physician Wilhelm Fliess, then popularized in the 1970s. The studies run since have found no predictive value in the three curves. We practice it for what it is: a ritual of attention to your own rhythms, charming and dated, that mostly invites you to listen to yourself.
- How do you calculate your biorhythm?
- It all starts from the number of days lived since your birth: you divide it by the period of each cycle (23, 28, 33), and the remainder shows where each curve sits in its wave. Working it out by hand is austere; the app traces all three curves for you, day after day.
- What's a critical day in biorhythm?
- It's the day a curve crosses the zero line, neither high nor low: biorhythm tradition reads a moment of tipping there, where the energy in question would be less reliable. When two curves cross on the same day, enthusiasts speak of a double critical day. Take it as an invitation to ease off, not as an alarm.
- What's the difference between biorhythm and the circadian rhythm?
- The circadian rhythm is a measured biological reality: the internal clock of about 24 hours that sets your sleep, your temperature, your hormones, and that chronobiology studies seriously. Biorhythm is a symbolic model with fixed periods and no physiological basis. One can be verified in the lab; the other is practiced as a game of observation.