Vulcan Biorhythm 97 is a personal Biorhythm with physical, emotional, mental and overall curves. Everything in nature is influenced by periodic rhythms. Biorhythms influence strength, mental abilities, moods, ability to learn, logical thinking, immunity to disease, and more. This program uses the three most commonly used rhythms (mental, physical and emotional) and adds an "overall&quot\; rhythm which is calculated from the average of the other rhythms on a given day. The chart is highly configurable\; you can change the number of weeks it displays, the chart colors, the line thickness, and chart style. You can save your chart as a bitmap (BMP) file or set the chart as your Windows wallpaper. Supports color printing.