1. Kneeling posture can well share the pressure on our lower back, and dumbbells can also be caught by hook. Remember to move your elbow first when you contract;

This is the swelling of the paddling arm. Please buy a booster belt, not a boat. At the bottom, dumbbells should match our breasts.

On a line, dumbbells should be in line with our abdomen at the top;

Don't shake your body to try to borrow money. You need to shake your body to prove that your training is too heavy.

4. The arm is sore, please buy a booster belt;

5. It's normal to have a sore back. This action will really use the lower back.