I have an elbow issue at the moment. I’ve tried the cumulative stropping, maybe 30 laps a day, and two sessions on shave day. I shave every other day. 20-30 on leather pre shave, 5-10 on poly 20-30 post. I notice no difference in quality of shave if I do a “normal” stropping routine, 90-100 pre, 5-10/20 post,as opposed to cumulative.