1: Incorrect posture: Two postures are incorrect. Just slowly place it almost parallel to your nose. Look at the elbow bending slightly less than 90 degrees. If the hand is too close to the shoulder, the forearm will be sore.

2. Wrong weight: generally, the weight can be pushed around 15.

3. The method of lifting dumbbells is wrong. You should observe others or watch online videos to understand how others praise themselves.

My shoulders are still sore and swollen when I practice, but the pain will not be too strong the next day, unlike my chest and thighs.