Isolated action refers to the action that only targets local muscle groups or just a small muscle. The adopt weight is relatively small. The isolated action corresponds to the basic action, the purpose of which is to make the trained muscles bear the training load alone without the help of other parts of the body as much as possible, so as to obtain greater training effect.
To put it bluntly, just a few pieces to practice together, or, one piece to practice alone, okay?
For beginners, don't rush to practice your arms, practice more compound movements, which are heavy and few times! Remember, the three ace moves are the foundation! ! Don't change your plan until you get bigger. ! Please do your best, it carries a lot of weight! Warm up, you'd better be protected. Thank you.