How to train back muscles and shoulder muscles in the gym?

In bodybuilding theory, RM is used to indicate the maximum number of repetitions that a load can do continuously. For example, an exerciser can only lift a heavy object five times in a row, so the heavy object is 5RM. 8 to 12RM has the best exercise effect for beginners. Each group should rest for no more than one minute, and each movement should rest for no more than two minutes.

Return: 6 groups of wide pull-ups (try to do more than 10)

Barbell bend over and row 4 groups

Sitting posture, neck pull-down (on gym equipment) 4 groups

Sitting behind the neck: