It is suggested now and then that systematic training in order to achieve greater muscular strength might be beneficial for concertina playing.Historically the same has been brought out for playing other musical instruments like guitar or piano. The interest seems to be periodical and fashion-like and even pedagogic "schools" may have popped up. The factual results are more obscure however and it is hard to find reliable objective reports. Nevertheless it would be of some interest to hear individual testimonies regarding practical attempts to improve performance by physical "work-out" of various kinds.