Muay Thai players won't get hurt because they have been trained a lot and their knees and elbows are strong. Some fighters can even hit the trunk of coconut trees directly.

The person who was hit depends on how he was hit. If he is hit head-on, all his strength is received by his head, which is a probability problem. Some people will faint, some people will get hurt, some people will go into shock, and some people will die. Only a handful of boxers can stick to the game.

Attacking a person's head with an elbow is back to the question just now. Not if you are trained and strong enough.

But then again, why go to that place? It's for handsome/