I'm not telling you to believe in biorhythms. Anyone knows that our life works in cycles. We all experience ups and downs. Maybe the biorhythm theories can help us understand why. Judge for yourself.

I started making this biorhythm calculator on a hung over sunday afternoon after a friend of mine told me he had spent good money on a PC biorhythm program. I just wanted to prove it was waste of money.

Today my biorhythm calculator is to be found on several websites arround the Internet. Here is a few examples:

Biorhythm Calculator at www.astro.dk	Biorhythm Calculator at www.mindbodysoul.dk	Biorhythm Calculator at www.uefa.gr
Biorhythm Calculator at www.newagestore.com	Biorhythm Calculator at www.numerologi.no

UPDATE: After having put this tool on this page many of my friend have tried it out. Several of them have afterward told me (even the ones who do not believe in 'crap like this') they can relate the fluctuations on the curves to how they have felt at the time.

Honestly, I'm a bit surprised by the amount of positive feed back. Thanks!