To succeed, a fighter must acquire the skills of four separate combat sports — boxing, wrestling, kick-boxing and submission grappling — and combine them.
best description of MMA.

At the end of the lesson, the students lined up and one at a time sparred with him. For the students, it was an opportunity to battle a world-class athlete.

“That’s perfect, there’s nothing you can do,” one student said in frustration as he sparred with Siqueira. From somewhere among the group of students watching came this response from Flint: “Could have something to do with him being a world champion.”
what itd all about, right there.