Biorhythms are cycles that attempt to describe energy levels or capacities for performance in various areas. Biorhythms are life cycles that start at your birth and last for all your life. People are influenced by cyclic changes of the seasons, moon shape, day and night etc. These factors periodical affect every man as well. These cycles can influence things such as: coordination, immunity to disease, strength, mental stability, moods, logic thinking, ability to learn, memory recall, instincts, etc. Charting your biorhythms can give a very real indication about your capabilities at a given time. The Japanese have used it to help restrain accidents in the work place. They describe very well the energy levels and the capacity for performance on 3 levels: physical, emotional and intellectual. The physical biorhythm lasts for 23 days and is related to your physical energy, strength, health, stamina. The emotional biorhythm last for 28 days just like the Moon’s cycle and relates to your emotional stability or stress. The intellectual biorhythm lasts for 33 days and relates to your mental capabilities, creativity and aptitude to solve problems. Your biorhythm above the horizontal line indicates that your capacity in that area is enhanced; you feel stronger, more alert, more connected, more empathetic. These are times when you are able to do more, be more, enjoy more. When the biorhythm lines are below 0%, your capacity is diminished and conservative behavior is recommended. Finally, when a biorhythm line crosses the horizontal line, or crosses another biorhythm line, energies are unpredictable and may not be favorable to you. These are the critical days you must be aware of and not schedule any important events that relate to that area. Biorhythm is used to predict times of peak performance, to gain a competitive advantage for nimble events, to improve your thinking ability for debates, become more confident at social events and for gaining the ascendancy in business negotiations.