The purpose of Biorhythm is to predict a physical, emotional
and intellectual pattern that indicates your up and downs for any
period of time. Biorhythm can show which future days will be good
or bad for you. These predictions are based on scientific studies
that  show  a physical cycle occurs every 23 days,  an  emotional
cycle every 28 days and an intellectual cycle every 33 days.

     Each of the cycles begins on the day when you are born,  and
begins again every 23,  28,  and 33 days thereafter, for the rest
of your life.

     When  the  graph  is to the right  of  the  centerline,  the
Biorhythm  is 'High',  with energy to spare.  For example,  on  a
physical  High,  we tend to be energetic,  strong,  and  full  of
vitality.  On  an  emotional  high,  we're apt  to  be  creative,
artistic,  aware, and cheerfull. On and intellectual high, we are
able to think quickly and solve complex problems easily.

     When  the  curve  is  to the left  of  the  centerline,  the
Biorhythm  is  said  to  be 'Low',  or  in  a  recharging  state.
Physically,  we tend to tire more quickly,  feel dragged out  and
succumb to colds and other illness more readily.  Emotionally, we
are apt to feel moody,  irritable,  or depressed. Intellectually,
we may find it difficult to concentrate or remember,  and may get
easily distracted, and be more likely to use poor judgment.

     The  day  that the curve crosses the centerline is called  a
'Critical' day.  On this day your system seems to be in a flux or
transition, and is therefore unstable. Your critical days are the
days when things are most likely to go wrong. People seem to lack
coordination,  and are therefore more accident prone on  critical
days.

                          But remember:

     Biorhythms  do  not predict that anything good or  bad  will
happen  to  you on your critical days,  they only tell  you  that
there  is  a 'Tendency' for you to behave in a certain way  at  a
certain  time.  If  we are aware of these tendencies before  they
occur,  then we can prevent any problems by being more careful in 
everything we do on these critical days.