Biorhythm Cycles
Biorhythm Cycles is a Modern / Biorhythm — three-cycle model body system as transmitted through the lineage Biorhythm theory emerged in late nineteenth- and early twentieth-century European proposals associated with Wilhelm Fliess and later popularisers. The popular model assigns fixed 23-day physical, 28-day emotional, and 33-day intellectual cycles from birth.. This page lists every point in the system with sourced placements and links to cross-tradition correspondences curated for The Body Spiritual.
Open in interactive explorerPrimary sources
- Swoboda, Fliess, and Tomcshario biorhythm history (Historical accounts synthesised in Hines, Pseudoscience and the Paranormal) — Documents the historical 23-, 28-, and 33-day biorhythm proposals and their later treatment as pseudoscience; see Hines, chapter 5.
Known lineage variants
- The fixed-period biorhythm model is widely classified as pseudoscience: controlled studies have not established reliable predictive effects, and the cycles lack an accepted physiological mechanism. These zones are an editorial visualisation of historical categories, not health, mood, or intelligence forecasts.
Related systems
No other systems share this tradition label.
Points
- Physical cycle — 23-day cycle
- Emotional cycle — 28-day cycle
- Intellectual cycle — 33-day cycle
Frequently asked
What is Physical cycle?
The physical cycle is conventionally assigned a 23-day period in biorhythm literature. Its torso point is a display metaphor and does not measure physiology or predict health.
What is Emotional cycle?
The emotional cycle is conventionally assigned a 28-day period. The heart-region display is an editorial symbol, not evidence that emotions follow this schedule.
What is Intellectual cycle?
The intellectual cycle is conventionally assigned a 33-day period. The head placement visualises the category and is not a validated cognitive or neurological marker.