Is it too late to practice professional mixed martial arts at the age of 20? Who is the eldest brother?
Mixed martial arts requires high physical fitness. It's a little late to practice at the age of 20, but if you really want to practice, of course you can, because it's your hobby. Having this hobby can keep fit, and if you have this qualification and talent, it would be better to start a career. It is a very happy taste to regard one's hobby as a career.