Software which, based upon your birth date, draws four different biorhythmic cycles: physical, emotional, intellectual, and intuitive. It can also compare biorhythms of two people, and it can warn you about your critical day. For example, if tomorrow is your physical critical day, then you should not be playing rugby, because there is a higher chance of you getting an injury. It is a great program for all those, who want to stay in shape and be prepared for unexpected!