I've read in the past that some automatic movements are not designed for regular hand-winding.

Apparently some grades of automatic watch movements use less hard-waring parts in the winding train - e.g. brass rather than steel. The idea is that regular hand-winding can prematurely damage the movement by stripping these parts. The advice is sometimes to shake an automatic to start it running, rather than hand-wind it.

Seems to make sense to avoid unnecessary wear on the winding train, but this will obviously have an effect on the power reserve and timekeeping of the watch.

Obviously it would be fine to hand-wind these movements occasionally - they're just not designed to be wound on a regular basis.

Any substance to all this?