I read an article in a magazine a while ago, and it did an experiment with one group of people not exersizing their pinkie muscles, one of the groups exersizing their pinkie muscles twice a week, and the other group just thinking about their pinkies. It turned out that the group that actually exsersized their muscles improved their strength by around 25%, and the group that just thought about it increased their strength by around 10-15%. Im not remembering the numbers exactly though. But it turned out that just thinking about the muscles made the reaction time between their pinkies and their brain better. I'm thinking that this has something to do with it.