Biorhythms for

From Jeff Jetton:

According to the theory of Biorhythms, we all have physical, mental, and emotional cycles that start at birth and continue regularly through life. This handy program will chart these cycles for any given day, using any birthday. You can store up to five frequently used birthdays and even calculate someone's age down to the day.

Whether or not biorhythms are a bunch of hooey, this is still a fun application to have on hand.