The Bicep,
when I was a young man,I did a lot of boxing, then I spent years doing manual work.
I have kept myself fit,I still work on a small holding, so as a result of continual physical work, I have strong biceps, nothing to do with concertina playing or anything else.
I might stress, contrary to what one member of this forum , has suggested, I am not a violent man,The Biceps are used for non violent activities.
it's life Jim but not as we know it