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 eneries 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.

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 who we can prevent it from happening the next time.

There are four biorhythm cycles that influence different functions and abilities.

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