I have just finished reading Solitary fitness by Charles Bronson. Bronson is a strong man, but he is in prison. He was orginally sentenced for a couple of years, but by his bad behaviour he managed to extend his stay to 28 years.
Please note that I didn't include the phrase stupidly in the first paragraph, because that would make him mad at me. There are standard excercises such as press ups, but there is a lot of hard core yoga stuff in there as well that I have never seen before. I was surprised to see a chapter on penis enlargement. I felt a bit weird reading about that, but what harm could it do.
Od course some pruddish people would say that I shouldn't be supporting a violent prisoner. I would say that if anyone does sayb that to me, I just make one phone call to my gangland connections and they will get their kneecaps broken.