I wonder how thick your sponge is. Generally speaking, hitting a wall is more suitable for practicing boxing than hitting a sandbag, because all the forces can act on one point when hitting a wall. Unlike hitting a big sandbag, the forces will not be released with the vibration of the sandbag, and hitting a wall can improve the ligament strength of the arm and wrist. I have never practiced boxing, but I have practiced Sanda and Jeet Kune Do. I have a 200 kg sandbag at home, but I didn't have enough strength at first, and my wrist was often injured. Then I hit the sand table (Jeet Kune Do training tool, you'd better hit the sand table (not expensive). You played 1 year and a half, and you played 1 hour and a half a day. Your wrist strength and arm strength have improved rapidly, and your fist speed and lethality have been greatly improved. Later, when you hit the sandbag, your wrist was never injured. The sandbag was not shaking but recessed from the middle. However, when hitting the sand table, you should be careful not to push too hard at first, or you will hurt your hand. After practice, it will be counterproductive. After playing the sand table, you can play empty boxing for 30 minutes to relieve hand fatigue and strengthen the control of strength. The speed will also increase. But if you want to practice combination boxing, you'd better hit sandbags, because the sand table is only suitable for straight punches and jab punches, and you can't swing. If you are playing games, you can practice heavy punches and straight punches by playing the sand table. If you practice well, you can often knock down your opponent, which is more useful in fighting than swinging. Under normal circumstances, ordinary people who practice straight boxing can't afford to punch. Let's go