+.th BIORHTYHM VI 8/5/77
+.sh NAME
+biorhythm \- show biorhythmic transition dates
+.sh SYNOPSIS
+.bd /usr/games/biorhythm
+mmddyy
+[
+y1
+] [
+y2
+]
+.sh DESCRIPTION
+.it Biorhythm
+calculates the biorhythmic transition dates
+for you based on the month, day and year of your birth,
+supplied in two digit format as
+.it mm,
+.it dd
+and
+.it yy.
+.it Y1
+specifies the starting year and
+.it y2
+the ending relative to 1900.
+Thus for a prediction for someone born September 27, 1952
+in the year 1977:
+.s3
+.dt
+ biorhythm 092752 77 77
+.s3
+Physical (ph) states have a period of 23 days,
+emotional (em) states 28 days,
+intellectual (in) states 33 days.
+.s3
+If no years are given the prediction starts at the date of your birth.
+.sh AUTHOR
+Jeff Schriebman
+.sh BUGS