I came here to suggest an idea, but I might as well disagree with Gruffalo too

I say it's fine to use technical exercises as physical exercises, actually I consider that the bulk of technical exercises. Knowing the patterns and theoretical concepts is easy, but that doesn't mean one can actually play a scale. Playing piano is a physical activity, very delicate athletics of the hand! The difference between a right note and a wrong note is a fraction of an inch, so why wait and let the physicality come on it's own, or worse - haphazardly. We can use these technical exercises to teach our fingers to consistantly get to the right place at the right time.
We don't want to spend hours everyday for the rest of our lives working on exercises! But if someone can't play a scale cleanly, better work on it. It doesn't take too long to begin to master the skill to where you no longer have to think about it when you have to play a scale, it becomes second nature, every scale you come across in music is playable. From that foundation, one could begin to practice variations on the scale, so that stacatto scales are second nature, and crescendos/diminuendos, in 3rds, etc...
A student could get these things directly from pieces, the physical work has to be done one way or another.
Anyways, my suggestion was, if you have a digital piano, to practice exercises w/o sound... After you've figured out what to do (with sound, so you know it's right!), then why bother listening to these repetitive figurations over and over again, if you can help it?