Clock writes: "The secret dream of all computer geeks has come true. Surfing the Internet can now have similar positive effect on bodily attractivity as surfing Waikiki or Malibu. Twibright Labs have developed Exciter, a cheap open source DIY exercise bike that is to be used while sitting at a computer. Running as a three-phase self-excited induction machine, it generates electricity to power the computer, the LCD screen or at least a desk lamp. This arrangement both saves time and provides additional motivation and fun in exercise. And if you tweak the excitation capacitors, you can draw over 500 volts!"