Trapezius muscle is a superficial muscle located in the upper back and middle back, which is divided into three parts according to its muscle fiber direction: upper, middle and lower.

Function: make the scapula close to the spine; The upper muscle bundle can lift the scapula, and the lower muscle bundle can lower the scapula. When the scapula is fixed, the contraction of one muscle makes the neck bend to the same side and the face turn to the opposite side; When two muscles contract at the same time, the head can lean back.

Exercise trapezius muscle can do dumbbell rowing and pull-ups.

The times of dumbbell rowing pull-ups: do about 4 groups, with a load of 10RM (if a certain weight can be done 5 times in a row, the load is 5RM), and do about 8 to 10 times in each group, with an interval of 1 minute in each group.