biorytmiikan

Biorytmiikka is a pseudoscientific theory that proposes that individuals are influenced by predictable biological rhythms that affect their performance and well-being. These rhythms are believed to operate in cycles: the physical cycle, supposedly lasting 23 days; the emotional cycle, lasting 28 days; and the intellectual cycle, lasting 33 days. According to the theory, each cycle starts at a neutral point and oscillates between periods of high activity and low activity.

The idea of biorytmiikka was popularized in the late 19th and early 20th centuries by Wilhelm Fliess and Hermann Swoboda, who developed the concept independently. Later, Alfred Teltscher, an Austrian engineer, added the intellectual cycle. Proponents of biorytmiikka claim that by calculating these cycles, one can predict periods of enhanced physical strength, creativity, or mental acuity, as well as times of reduced capacity or increased susceptibility to accidents. Charts or graphs are often used to visualize these supposed cycles based on a person's birth date.

Despite its historical presence and continued interest in some circles, biorytmiikka lacks scientific validation. Controlled studies have failed to demonstrate any consistent correlation between these theoretical cycles and actual human performance, mood, or health outcomes. The scientific community generally regards biorytmiikka as a form of pseudoscience, as its claims are not supported by empirical evidence or established biological mechanisms.