I started the exercise because I happen to have those troublesome electric Power Gear jacks. Since I have exercised them I have had zero problems. Didn't use the washing machine for a year and when we used it the pump wouldn't function so I was able to spin it backwards with electric drill for a while and it worked. We run that once in the summer and haven't had a bit of problem since. I am convinced that any electric motor that has brushes need to be exercised. Some don't agree but I plan on continuing my routine as it seems to work.:D