Biorythms. Hmmm. Maybe you think they're a load of nonsense and will immediate scroll off somewhere else or wonder why on earth I'm taking so long to come up with those PowerPoint notes. If you're still here, Google have a nice little gadget that can sit on your desktop and indicates when your emotional senses, physical state or intelligence might be at a peak or trough, based on the assumption that each varies over time in a sine wave fashion. If nothing else, it might help explain why some days are just plain lousy!
Get it
hereYou can also see at a glance how old you are. You can also do that in Excel quite simply.
Type you date of birth in cell A1. In another cell type =NOW()-A1. That'll give you a funny date. Use Format|Cell to change the display to a Number, General to get the number of days.