The common causes of upper body aches and pains are as follows: First, excessive muscle loading: Upper body aches and pains are mostly caused by physical labor involving the upper body, or sports activities, such as frequent lifting of physical labor and functional training of the upper limbs, such as lifting weights or pull-ups, push-ups, etc., which can lead to overloading of the muscles of the upper limbs, and then the lactic acid builds up in the muscles of the upper arms, which can be manifested as The upper arm deltoid region, or biceps, triceps region soreness and pain. Secondly, frozen shoulder: the pain of frozen shoulder is more extensive, it can be from the neck and shoulder to the outer deltoid muscle, the outer side of the upper arm, the inner side of the upper arm, that is, the armpit area, the front can be to the pectoralis major muscle, and the back can be to the scapula area, so it can be manifested as the soreness and pain in the upper body near the shoulder joint area.