I have no idea how Americans convey the message that someone is physically very strong in informal everyday English. [In my mother language we say someone has a power of a donkey.]
The only equivalents which I found are as below:
He is cock strong.
He is strong like bull.
I was wondering if you could tell me which one sounds natural in English. If none makes sense, then could you tell me what a native speaker would say to indicate such a meaning to someone else?