UserHealth Official Homepage!: "Do you spend several hours in front of the computer without breaks or pauses? Maybe you want a tool that can monitor how much time you actually spend in front of the computer? In that case this software can be perfect for you, and by the way did I mention that it is freeware!
The purpose of Userhealth is to be your silent health and sleep supervisor! What UserHealth actually will do is provide you with regular health, pause, and go to bed messages. The messages can be displayed like small popup windows in the right corner (Almost like a MSN login popup) or if you prefer a topmost window or just sound feedback. The messages will contain suggestions about pauses and small exercise that the user can do to stimulate the body and to avoid Repetitive Stress Injuries (RSI). However the main purpose is to draw attention to the user that he or she has been using the computer for a long time and maybe need to take a break."