May I ask how professional casual fighters train to withstand blows? I'm sorry, but I'm not going to say anything about it.

On the one hand, it is the natural accumulation and improvement of resistance to blows in the actual combat confrontation, on the other hand, there are special training specifically for resistance to blows.

Personally, I believe that the special training to improve the ability to fight can be divided into two aspects, one is to improve the mental endurance, and the other is to improve the physical endurance. Improvement of anti-punching ability is not overnight, but gradually, generally start to use some flexible and elastic (such as basketball, glue stick, boxing gloves, a class of things) things on the body of solid parts of the strength of the moderate blow, when fully adapted to a certain intensity, it will increase the power or change to other harder objects, it is said that the most extreme is to use fists and feet directly or even iron rod heavy blow. Trainers are not completely passive to bear when practicing, when receiving a blow, the spirit should be concentrated to the part of the hit, and subconsciously tighten the muscles, use that part of the force, the body and mind in unison, in order to achieve the purpose of the row of strikes.

In addition to direct striking training, you can also carry out some targeted training to increase muscle mass and density, but also to improve the ability to resist strikes. But since the purpose of sparring training, then it is more concerned about the explosive force, the need for physical coordination and proportionality, it is not recommended to use the bodybuilding of the large weight machine training way to get big muscles, it is best to unarmed training. Traditional martial arts have a torso position to improve the ability to fight the law door "Crouching Tiger", belonging to the Shaolin Kung Fu, some similar to push-ups, not too complicated, if you are interested, you can go to understand to try.