🚀 go-pugleaf

I was wondering if anyone had a DOS-based program for PCs that could
flash a message after a user-determined length of time.  My doctor
prescribed timed rest breaks from typing to help with my tendonitis.
I've tried setting my watch to beep every half-hour, but I've found to
my chagrin that one out of every three times I set it, either I don't
notice it going off, or else I say, "Yes, all right, as soon as I finish
this page," and then I forget and don't come up for air until another
half-hour has passed.

I notice that some people in this group have been discussing a program
that either beeps or puts a message on the screen after a certain amount
of keyboard action has been accumulated, but I was really looking for a
more simple-minded kind of timer since just being poised to type, even
if I'm not actually typing all the time, incurs a certain amount of
stress as well.

Thanks in advance for any assistance.

-Micky