Biorhythms are based on the idea that cycles, which can be calculated and graphed, can be used to make predictions about your life. Biorhythm theory is the pseudoscientific idea that our daily life is significantly affected by rhythmic cycles with periods of exactly 23, 28 and 33 days, typically a 23-day physical cycle, a 28-day emotional cycle and a 33-day intellectual cycle. The idea was developed by Wilhelm Fliess in the late 19th century and became popular in the United States in the late 1970s. The proposal has been independently tested and, consistently, no validity has been found for it.
According to the theory of biorhythms, a person's life is influenced by rhythmic biological cycles that affect his ability in various domains, such as mental, physical and emotional activity. These cycles begin at birth and oscillate steadily (sinusoidal wave) throughout life, and by modeling them mathematically, it is suggested that a person's skill level in each of these domains can be predicted day by day. The theory is based on the idea that biofeedback chemical and hormonal secretion functions within the body could show sinusoidal behavior over time. The scientific basis for calculating biorhythm is found in chronobiology.
There, human time cycles are scientifically examined and both personal and general patterns and rhythms are determined. The basis of biorhythm was laid at the beginning of the 20th century by the Viennese psychologist Hermann Swoboda and the Berlin doctor Wilhelm Fliess. Fliess believed that he had discovered consistent regularities in his patients' medical records and formulated a referral as a period theory. Both tried to discover a regularity behind the good and bad times of a life.
Critical days, potentially bad, are those transitions in which there is a change from positive to negative and vice versa. If there is a transition of all three phases on the same day, this can have crisis-like consequences according to biorhythmic theory and, on the contrary, the coincidence of positive days can result in particularly good days. The biorhythm calculator table shows the four main biorhythms by default. You can set your date of birth to get the values of your biorhythms.
You can also drag the biorhythm chart left or right with the left mouse button or use the mouse wheel to scroll. The black rectangle that marks one of the days on the graph is called day X. You can change Day X by dragging it with the right mouse button or by holding down the Ctrl key and dragging it with the left mouse button. Without them, biorhythms became another pseudoscientific statement that people are willing to accept without the required evidence.
Creating biorhythm charts for personal use was popular in the United States during the 1970s; many places (especially video rooms and entertainment areas) had a biorhythm machine that provided graphics upon entering the date of birth. Biorhythm calculator for everyone who wants to know their current physical, emotional and intellectual levels. Below the graph is a section that shows the current values (as percentages) of the biorhythms shown for day X. However, unlike biorhythms, which are claimed to have precise and unalterable periods, circadian rhythms are found when observing the cycle itself and periods are found to vary in length depending on biological and environmental factors.
Those who push biorhythm calculators and books to a gullible audience are guilty of making fraudulent claims. The practice of consulting biorhythms was popularized in the 1970s by a series of books by Bernard Gittelson, including Biorhythm A Personal Science, Biorhythm Charts of the Famous and Infamous, and Biorhythm Sports Forecasting. Both the theoretical basis and the practical scientific verification of the theory of biorhythm are lacking. At the bottom right of the graph, you can find a legend containing the names and colors of the biorhythms displayed.
Therefore, the only two pieces of information you need to figure out where a person is in their biorhythm cycles are their date (or to be precise, the time) of birth and the date (or time) they want to know, and in most cases that will be the current moment in time. The 23-day and 28-day rhythms used by biorhythmists were first devised in the late 19th century by Wilhelm Fliess, a Berlin doctor and friend of Sigmund Freud. Skeptical evaluations of the various biorhythm proposals led to a series of criticisms that criticized the issue published in the 1970s and 1980s. .