Sitting at your desk isn't just unhealthy, it can be dangerous - bad for your posture, bad for your circulation, and bad for your karma. Many people are opting for standing desks instead - desks designed to let you work while standing or walking in place on a treadmill. Ergotron can help you convert existing work surfaces with their Workfit series of stands - aluminum stands especially designed for the iMac and Mac laptops that clamp or bolt to your desk, raising the devices (and the iMac's keyboard) to a healthy height.