The 2015 Sports Illustrated Swimsuit Issue cover

[SuperMillionaire]

And another thing I would want to know is this: why are martial arts called "arts?" Is it an art form to beat someone up?

It's probably a simplification of the original meaning through the first translators at the time. While 術 can refer to art, it also can mean skill. You could translate Wushu into a variety of different words. The word art was probably chosen because of the historical philosophical associations with Chinese Martial Arts. Martial arts is a catch all term now though which refers to any fighting discipline, i'd imagine?

Of all the words, why did they have to choose the word art? I don't think it should be called an art form to beat someone up.

From what I have seen of the UFC, they trash talk each other, but why do they do that? If they supposedly respect each other, why do they trash talk each other?

Because their job is to provide entertainment to viewers. That's what they are paid for.

So they respect each other in private, but talk trash in public when everyone's watching? Why?

And another thing: with the exceptions of boxing and wrestling, which were invented in Greece back in ancient times (although modern boxing was invented in the UK), do all martial arts come from Asia? The reason why I'm asking this is because although MMA is a Brazilian invention, martial arts have been typically, traditionally, and historically associated with Asia. Kung fu is from China, taekwondo is from Korea, judo, aikido, karate, and kickboxing are all from Japan, and Muay Thai is from Thailand. I consider Brazilian jiujitsu to be technically Japanese, because it was invented by Japanese immigrants (there are a lot of Japanese immigrants in Brazil).