Biorhythms are biological cycles that begin at birth and influence us all our lives. Each cycle starts at birth at an imaginary horizon line and then alternates from a high period (above the horizon) when our energies and abilities are high, to a low period (below the horizon) when our energies and capabilities are reduced. The 2 days where each cycles crosses over that horizon line are called critical days, when the cycle is crossing from positive to negative and from negative to positive. During these critical days our abilities and energies fluctuate wildly and we are more accident prone, and more apt to make the wrong decisions.

Biorhythm Cycles

Knowing our Biorhythm Cycles helps us make plans and decisions. For example:

  • scheduling an important job interview when our intellectual cycle is at its peak
  • having an operation when the physical cycle is at its peak
  • or just looking back at what went wrong and how we can prevent it from happening the next time
  • helping with sports performance, is the game scheduled for a critical day or am I at my physical high for that day

For a more in depth look at Biorhythm read the in depth article about Biorhythms. Do you find that Biorhythms give you accurate feedback about what’s going on in your life? We would like to hear about it.

There are four Biorhythm Cycles that influence different functions and abilities.

The 4 Biorhythm Cycles

Physical 23 days stamina, co-ordination, basic body functions, immunity to disease, strength, speed
Emotional 28 days moods, creativity, mental stability, sensitivity
Intellectual 33 days judgment, logic, mental alertness, conceptual ability, decision making, memory recall, ability to learn, analytical functions
Intuitional 38 days unconscious perception, hunches, instincts, sixth sense


Give it a try with this Biorhythm Calculator right now