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Physical, emotional and intellectual cycles
Explanation revised: 2026-10-18
Biorhythms is the theory that from birth three cycles operate within us: physical (23 days), emotional (28 days) and intellectual (33 days). Each cycle fluctuates like a sine wave: now rising, now falling. Knowing the phase of the cycles today, you can plan important matters for favorable days. The service calculates biorhythms by date of birth and builds a clear chart. It is free.
Enter your day, month and year of birth and press “Calculate”. You will see three percentages for today and a chart for the coming days. Green values are a rise (favorable), red are a fall (be careful), near zero are critical days.
Biorhythms is useful when you want a quick online result, a symbolic hint or a starting point for reflection. It is suitable for personal use, comparison of options and a calm pause before a decision.
The result is informational and symbolic. It does not replace professional advice and should not be used as the only basis for medical, legal, financial or other high-stakes decisions.