Workrave is a free software application that assists in the recovery and prevention of repetitive strain injury (RSI). The program frequently alerts you to take micro-pauses, rest breaks and restricts you to your daily limit.
The software periodically locks the screen while an animated character, ?Miss Workrave?, walks the user through various stretching exercises,and urges them to take a coffee break.
It currently runs on GNU/Linux and Microsoft Windows (using GTK/Win32).
Repetitive strain injury (RSI) – RSI is caused by repeated overuse and injury to the muscles of the hands, wrists, arms or shoulders. It can damage muscles, tendons, and nerves of the neck, shoulder, forearm, hands, legs and back.
Repetitive strain injury (RSI) also known as Cumulative Trauma Disorder (CTD), occupational overuse syndrome, or work related upper limb disorder (WRULD).
Download at http://www.workrave.org/download/