Hi forumers,

I hope the question fits here.

Most of you might be aware that many martial arts have somehow involve breaking very hard materials like wood board, brick, slab, ice block, marble, etc...to test the practitoners limit.

And I also believe the martial artist able to do so due to hard training over the years (plus 'chi' inside their body).

Martial artists are also human, I just always get amazed by how the body structure can withstand such a blow?

Any explaination behind?