The correct posture should be aimed at triceps soreness, so it is normal. The second humerus should not be sore. When doing this, the whole person ensures that the abdomen is in a straight line. It is normal that some muscles will be oppressed and hurt. But after a long time, there is nothing wrong with waiting for some muscles to adapt to your training intensity. Push-ups are also good for waist and abdomen exercise. Secondly, when doing it, the distance between your hands should not be too small. It can be a little wider than the shoulders. Don't look ahead. Inhale when you go down, exhale when you come up, slow down when you go down, pay attention to your chest when you get to the highest point, and stay for about a second.