The Biorhythm Calculator computes your physical, emotional, and intellectual biorhythm curves based on your birth date. It helps you understand your cyclical patterns and plan work, study, and life accordingly.
Athletes use physical rhythm to schedule training intensity and competitions. High phase suits intense events; low phase calls for lighter training.
Students reference intellectual rhythm for important exams and study sessions. High phase brings sharper thinking for tackling difficult problems.
Understanding emotional cycles helps regulate mood during low phases and avoid impulsive decisions. High phase is great for social activities.
Combine all three rhythms to assess overall state. Schedule important work when conditions are favorable; handle routine tasks during low periods.
Biorhythm theory was proposed by Wilhelm Fliess in the late 19th century, identifying 23-day physical and 28-day emotional cycles. Alfred Teltscher later added the 33-day intellectual cycle. Formula: Value = sin(2π × days / period) × 100. Positive = high phase, negative = low phase, near zero = critical phase. Note: This theory is scientifically controversial—use as fun reference.
Three cyclical rhythms: physical (23-day), emotional (28-day), and intellectual (33-day). Each cycle has high, critical, and low phases starting from birth.
When a rhythm curve crosses zero, transitioning between high and low phases. Theoretically, these days bring instability and increased error risk.
Controversial. Circadian rhythms exist, but fixed 23/28/33-day cycles lack rigorous validation. Use as reference only.
Range -100 to +100. Positive = high phase, negative = low phase, near zero = critical phase.
Theoretically all states are at their lowest. Avoid major decisions and intense activities. Don't over-worry—just reference.