The biorhythms begin at birth and rise and fall through positive and negative stages roughly every month. The most noticeable are the primary biorhythms of the physical, emotional, and intellectual cycles. The word 'biorhythm' literally means 'the rhythm of life'.

There are many obvious cycles in nature, such as the phases of the moon, the tides, day/night, sleeping/waking, astrological cycles, etc. The biorhythms are another natural cycle, but since they are biological rhythms, they are less noticeable.

Dr Wilhem Fliess and Hermanna Swoboda developed the theory of physical and emotional biorhythms during the begining of the last century. The intellectual cycle was discovered later, in the 1920s, by Alfred Teltscher. Sigmund Freud, the founder of psychoanalysis, took a great interest in biorhythms, and was a friend of Fliess. He saw them as a major breakthrough in biology.

A biorhythm is represented as a sine wave, which passes through a central critical line at the beginning, middle and end of each cycle. These 'critical days' are the most stressful points in a biorhythm cycle, days when we are at our most vulnerable.

Biorhythms can be applied to almost any aspect of life, but there are some areas where they have been found to be most useful. These include sports performance, knowing when you are most accident-prone, to taking advantage of the best days for increased creativity or using your intelligence, and relationship compatability.

The daily biorhythm calculator produces a graph of your physical, emotional, and intellectual cycles, while the mystical I-Ching biorhythm calculator show your compassion, self-awareness, aesthetic, and spiritual cycles.

Enter Your Birthday :	pick a date...

The I-Ching biorhythms consist of the four soul-centred cycles of Compassion, Self-Awareness, Aesthetic, and Spiritual rhythms. They are considered secondary to the Physical, Emotional, and Intellectual cycles because of their less tangible nature, and have longer lengths of 38, 43, 48, and 53 days, respectively.

Compassion Cycle
Influences the quality of your intuition, psychic perception, and sixth sense. Since it has a subtle influence, it is of greater value to those people who are sensitive to it, and involved in psychic, intuitive, and healing activities. Sometimes called the intuition cycle in the West.

Self-Awareness Cycle
Describes the ability to perceive and be aware of your personality and individuality, thoughts, feelings, and beliefs. Acts as an aid to overcome self-deception and illusions, to help you to become conscious of your inner self and to create a more satisfying life journey.

Aesthetic Cycle
Colours your aesthetic taste, judgement, feelings, and appreciation of art, beauty, harmony, etc. Handy for people working in creative fields and using their imagination, such as art, writing, and music, as the days can be found when you are most sensitive to your creative ability.

Spiritual Cycle
Charts the rhythms of your spiritual life, and the relationship you have to your higher self. Shows those days when you are feeling calm, at peace, and in an elevated state of mind, or when you can have difficulty being centred, quiet, and relaxed. Therefore, this cycle can affect spiritual development and meditation work.