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after hours: biorhythms

According to ancient theory our lives run in continuous cycles starting from our date of birth.

The main cycles are:

  • a physical cycle of 23 days,
  • an emotional cycle of 28 days and
  • an intellectual cycle of 33 days.

Each cycle has two phases, an active (high) phase - when the line is above the horizontal axis - and a passive (low) phase - when the line is below the axis. The changeover days - when the line crosses the axis - are regarded as critical as they are times of transition.

To calculate and chart your biorhythms for the next month (or whatever period you choose) just click on the link below to download an Excel spreadsheet (also works with and LibreOffice).