We didn't like that, so we decided to create monk, a little robot that will encourage you to stand up every once in a while.
He doesn't like sitting down for too long. Once this happens, you should grab him and walk around for a bit. He'll let you know when you've moved around enough time.
Packed with motion sensors and a microprocessor, monk can tell when he is being moved. He's smart, though, he can tell whether he's been moved enough time and not just shaken a bit.
Standing up every hour and moving around oxygenates your body, stretches your muscles and activates circulation. Also, segmenting your day in series of one-hours can help you stay organized and increase your productivity.