Sometimes a break program will make things worse. When you are under (time) pressure and the break program is blocking your PC you will get stress. And stress is one of the main reasons for getting RSI.
Hopefully being under such time pressure is not the normal mode of operation though ;-)
All the break programs I have used have a "manual override", and you can also turn them off. Occasionally I have done that if is something really critical that has to go out at once. But for me that happens maybe once or twice a year.
