When developing something new, I make tons of tiny work-in-progress commits, sometimes dozens in a day, and frequently go back and squash them with rebase into a logical flow of changes, once it's more clear what that logical flow really is. I keep my WIP branches around locally for a while so I can go back and dig out the experiments I made along the way.

I prefer this over trying to get every commit right the first time. I also feel there's a nice change of pace in the process of stepping back, looking over the previous work, and shaping it into something that communicates the ideas well to reviewers.