Currently, Workrave behavior is fully predictive. This bears the risk to get used to it, and simply ignore or word around it. That could be prevented by adding some randomness to counters and behavior.

* No fixed time until next break, sometimes a bit shorter or longer
* No fixed break time, sometimes a bit shorter or longer
* Not always the same break display, Workrave could automatically choose from the different modes such as "empty screen" / "text messages" / "image" / ...