The abdomen is the core of a person. If you don't practice your abdomen, your coordination will be particularly poor.

The abdomen plays a connecting role in the body. If the abdominal strength is too poor, your upper and lower limbs will not be coordinated.

For example, if you make a turn and punch, the force will come from the ground, then spread to your feet, and then spread to your upper limbs through your abdomen, so that your punch will be powerful and your body will be well coordinated. If you have no strength in your abdomen, the strength will be transferred from your thighs to your abdomen. If the abdominal strength is too weak, the strength transferred to the upper limbs will be limited, and the upper limbs will have no strength when punching, which will be uncoordinated because of the unstable center of gravity.

Therefore, we must strengthen the strengthening of abdominal muscles.