There's so much myth and baloney. Like a 80-year-old man able to manhandle a 300-pounder with his little finger. Ridiculous. Or this matter of breaking bricks and boards wth the edge of your hand. Now I ask you, did you ever see a brick or a board pick a fight with anybody?
The athlete who is building muscles though weight training should be very sure to work adequately on speed and flexibility at the same time. In combat, without the prior attributes, a strong man will be like the bull with its colossal strength futilely pursuing the matador or like a low-geared truck chasing a rabbit.