Alexander Zass was best known by his stage name, The Amazing Samson.

He was an oldtime strongman capable of snapping chains and bending iron bars. In fact, the legend is he was able to escape a POW camp by doing just that. From this and other training over his lifetime he was a huge proponent of isometric training.

This book, The Amazing Samson, describes his life, his training and how to do many of the feats, including chain breaking and nail driving and pulling. Also features writings from a fellow strongman and friend William Pullum. Also be sure to check out The Mystery of the Iron Samson for more details on Zass, including some of the exercises he used for his training.