at this web address you can sign up for a daily Biorhythm chart.

http://www.biorhythmfree.com/community/registration/

below is mine for today as an example


Dear Linda, this is your biorhythm for Thursday, February 25th:

Today your intellectual level is 80%: if you have to sit a test or exam, you will probably have excellent results. Your physical level is 42%: do not exaggerate muscular effort.
Your emotional level is 94%: it is unlikely you will lose control!

it will also show you an associated graph.

good tool if you would like to see how you will have a good day or even perhaps a grumpy day   it will help how you handle the day

Good Luck!!!