Why are folk masters who practice traditional martial arts in poor shape?

Powerful human beings have big arms, round waist, big trunk and strong shoulders and arms. The waist is the most powerful part of the human body. Waist and buttocks can mobilize the muscles of the whole body and promote the integration of physical strength. We can have this experience when moving and pushing heavy objects. Whether it is an ancient domestic military commander or a modern foreign strongman, if we emphasize strength, nine times out of ten we will develop into such a great man.

Let's take a look at the athletes in strength events, such as weightlifting, shot put, discus and heavyweight boxing. Are they all close to this size ~