Don't listen to their groundless words, Schwarzenegger, Carter and Ronnie, they are all from practice and thicker than before.
You must be sore every time you finish practicing, otherwise you won't last long. That's how they all got here.
You can practice other movements, and practice three heads after biceps.
I guess you are a novice. Give you a book, Schwarzenegger's fitness book, which is very good /s/z64zOA4TSnpmS.