Personal Biorhythms - the calendar maker! Make and print easy-to-read biorhythm calendars for yourself. So, what are biorhythms? According to online sources, our lives are governed by rhythms: everything from the rhythmic air circulation of our respiratory system to the four seasons. Three particular rhythms involve our own bodies: physical, intellectual, and emotional. These are rarely all three at a high or low point at the same time. With this program, you can chart two of your three biorhythms (physical and intellectual) on a calendar. This program breaks the mold and makes biorhythm reading significantly easier. Note: no specific OS compatibility information is available for this program. [Get more info | Download a trial]