I have some muscle/nerve atrophy and I've been doing the heel-lifting exercise nearly daily since I watched Anton's video. I automatically tend to walk like I had swimming fins on (flippers?) bc my feet/ancles cant move up/down fast enough.

That doesn't train the calves much, so I were thinking that a bike with a seat too high would force calf training as the foot can't reach unless I push through.

Biking with a high seat might be as good as walking - for some, anyway..