The question–whether monitoring biorhythm cycles can actually make a difference in people’s lives–has been studied since the 1960s, when the writings of George S. Thommen popularized the idea.
Several companies began experimenting and although the Japanese were the first nation to apply biorhythms on a large scale, the Swiss were the first to see and realize the benefits of biorhythms in reducing accidents.
Hans Frueh invented the Bio-Card and Bio-Calculator, and Swiss municipal and national authorities appear to have been applying biorhythms for many years before the Japanese experiments. Swissair, which reportedly had been studying the critical days of its pilots for almost a decade previously, did not allow either a pilot or a co-pilot experiencing a critical day to fly with another experiencing the same kind of instability. Reportedly, Swissair had no accidents on those flights where biorhythm had been applied.
Most biorhythm models use three cycles:…
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