Biorhythm charts document a subject’s emotional, intellectual and physical states over a period of time, according to IntMath. Other information typically found in such charts includes subject names, birth dates and number of days elapsed since inauguration of a chart, explains Microsoft.
Biorhythm charts track variances and the convergence of physical, emotional and intellectual states over time, explains IntMath. When plotted against an unvarying baseline on a graph, the changes appear as undulating sine waves that form recurring patterns known as cycles. Each state has distinct cycle that extends over a specific of time: emotional cycles last 23 days, intellectual cycles 33 days, and physical cycles 23 days.
The starting point of a biorhythm chart is the birth date, which serves as day zero, notes IntMath. Birth dates are neutral — neither positive nor negative — and along with the unvarying baseline, serve as an anchor for the sine waves that document variances in the pertinent personal states. Biorhythm charts can be created with a variety of tools that range from common spreadsheet programs offered by companies such as Microsoft to specialized software sold by firms such as Binary Mark.
Biorhythm chart acolytes consider the periods coinciding with cycle peaks ideal for certain activities, according to IntMath. For instance, subjects are most likely to perform well in exams when they take them at the crest of their intellectual cycles. Believers view the conjunction of crests in all three cycles, as especially fortuitous, while they consider a coincidence of dips as particularly bad.
The roots of the logic behind biorhythm charts lie in the undulations in emotional, intellectual and physical states prevalent among human beings, states IntMath. However, despite their utilization of mathematical concepts such as sine, these charts are not considered scientific.