As I'm using the term, I don't see forced exercise being used instead of "normal" exercise, but as an addition to it. Exercise, especially where varied, seems very sensible to me.

It may turn out that FE is most appropriate in situations where the limiting factor is dopamine (rather than normal body fitness). For instance, finger taps rather than running.

The key questions are:
- does FE lead to more dopamine in the brain?
- does FE of a finger, say, have a localized effect, to those areas dealing with finger movement?
- is there enough neuroplasticity to change the dopamine economy?

John