Biorhythm NumberThis number shows the characteristic features of a person so that it is possible to predict the behaviour of that person in some situations. This number is found by summing the numbers of the date and month of birth, and for instance, if one is born on 18. 8. 1984, the biorhythm number of that person will be calculated in the following way:
1+8+8=17 - day and month of birth (18. 8)
1+7=8 - this is the biorhythm number.