Do you ever check your biorhythms? Once in a while, if I'm bored enough, I do. This usually happens at work.
The idea behind biorhythms, as I understand it, is that certain functions of our life run in cycles that start when we're born. The three main functions are our physical, mental, and emotional states, and each runs on its own cycle--say, 24 days for one, 26 for another, 28 for the last. You can plot a line as these cycles go up and down with lines that look like an EKG.
I don't think biorhythms are any more accurate than horoscopes, but they're not as fraudulent as Dianetics or Creationism.
I've read that in some industries in Japan a person whose rhythms are very low can use them as an excuse to stay home from work, with full support from the company.
I mention this because my chart for this weekend (Jan 15-17) has all three of my elements at rock bottom. According to the proponents of this idea, that means I should stay home and not do anything more complicated than eating. Preferably soft foods.
By a stroke of luck I did spend most of the weekend at home. I watched the NFL playoffs while I printed out my zines for Dapa-Em and OWLHOOT. I didn't feel any dumber or emotionally unstable than usual, but perhaps I've already bottomed out in those areas and I have no lower to go.