I am a bodybuilder, and I feel good about my abdominal muscles. I want to strengthen my combat capability!

Hello, the way to exercise abdominal muscles: 1, do 20 sit-ups in one breath without stopping, let the sparring partner hit the abdomen with his fist (with all his strength) 2, do 20 sit-ups in one breath without stopping, let the sparring partner hit the abdomen with a baseball bat 3, and hit the abdominal muscles with his feet (with all his strength) 4, lying flat, with his upper body slightly up and his abdominal muscles tight. This is my brother's abdominal muscle fighting training method. He is a Sanda athlete. If you do bodybuilding, your abdominal muscles must be strong. I wish you an iron abdominal muscle as soon as possible! Come on!