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Biorhythms Information

Biorhythm charts illustrate the principle that people are influenced by various cycles in their lives: physical, emotional, and intellectual. Biorhythms do not predict or explain events, they can only suggest how we may deal with them. Some people believe they can improve their lives by monitoring the highs and lows of these cycles and acting accordingly.

Circadian RhythmThe Theory of Biorhythms
Three thousand years ago, scientists in ancient Greece recorded the regular rhythms of basic bodily functions, for example: respiration, kidney activity, pulse rate, menstrual cycles. The Greek physician, Hippocrates, in particular, noticed that good and bad days fluctuated in both healthy and sick people.

It was only relatively recently, however, that the theory of three internal cycles with a definite effect on behavior patterns gained credibility in our society, and its practical use was appreciated by many people in all walks of life.

More recently, the theory of biorhythms is attributed to Dr. Wilhelm Fliess, a German physician, who at the beginning of the last century, noticed identical rhythms in the case histories of his patients. He concentrated on physical and emotional cycles, whereas. an Austrian, Prof. Alfred Telcher contributed the concept of the intellectual cycle.

At the same time, another Austrian, Hermanna Swoboda, a professor of psychology at the University of Vienna, was working along similar lines while analyzing dreams, ideas and the creative impulses of his patients. His work led to the concept of “critical days” in a life cycle.

As the biorhythm theory progressed, the principle stated that the physical curve cycle lasts 23 days, the emotional curve lasts 28 days and the intellectual curve lasts 33 days. The cycles start at a middle point at birth, and then rise or decline from this point at different rates over our lifetimes. All three cycles go through positive (ascending) and negative (descending) phases. The days on which a cycle passes from positive to negative or vice versa are known as "critical" days.

Biorhythms Chart

High and Low Curves
When the curve of any cycle is above the midline, we experience a "high" in the corresponding field. Conversely, a curve of any cycle below the midline, indicates a "low" and “foggy” feeling in the corresponding field.

  • Physical: a high means physical health is good, strong, resilient, with great endurance. In the low cycle: less stamina, energy and strength.
  • Emotional: an emotional high indicates good mood, creativity and good relations with other people; this cycle governs the nervous system and is referred to as the ‘sensitivity rhythm’ . In the low cycle: irritability and negativity regarding things in your everyday life.
  • Intellectual: an intellectual high allows for sharper concentration. good memory and alertness, being open to new ideas. In the low cycle, foggy thinking, inability to grasp new ideas.

Midline Crossings
There are three critical days in each cycle, and statistically, it has been shown, that more accidents happen on these days than at any other point in the biorhythm cycle. When any of the physical, emotional or intellectual curves crosses the midline, this is a critical time and if two curves cross the midline at the same point, it is even more critical.

  • Physical: Such an occurrence, such as in the physical field means you may feel exhausted; avoid great physical effort and surgeries.
  • Emotional: Emotional curves at midline might mean you are irritable or sad. In this case it would be a good idea to avoid conflicts and arguments.
  • Intellectual: Intellectual fields at midline mean foggy or sluggish thinking; postpone activities that demand a lot of concentration.


The yellow bar in a reading is the average of the three levels "physical", "emotional" and "intellectual". This level can be used to interpret your general well-being or state of health.

Generally, the higher a given cycle at any given time, the better a person can interact in that related field. If a person’s cycle is at a low point, you may still be able to perform well in the affected area, but it will require a lot more effort on your part.

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