"We can't live by ideas
We have to do something with them"
Flis and Swoboda understood what a great role their investigations played in practice. They worked out the first methods for determining critical days. Their followers worked out tables, cards, charts, biocalculators, biorhythmic clocks and even special biorhythmic computers.
To determine the state of your own biorhythms you have to enter your exact birth data.
Select your date of birth:
* Please select your date of birth
Your date of birth is: