Does nayone knows if theres an advantage in doing Dynamic Tension (DT) exercises over traditional weight lifting?

I sorta wonder if that classical Charles Atlas DT muscle building stuff actually works or not?

One of my cousin was in the military many years ago and he came back with huge arms. I'm wondering what type of muscle building they are doing. It seems to work very well for them.

__________________
I want a girl who likes to talk. ......I just dont know what to say sometimes and would rather just listen.