Boxing
From the legends:
"Boxing is my real passion. I can go to ballet, theatre, movies, or other sporting events... and nothing is like the fights to me. I'm excited by the visual beauty of it. A boxer can look so spectacular by doing a good job."
- LeRoy Neiman -
Boxing is, of course, one of the oldest and most well-known martial arts and sports. You see it in the Olympics, Muhammad Ali is one of the greatest athletes in history and was a master of the form. Any number of films focus on the sport, but of course Rocky is the most famous of those.
Boxing's style is distinctive; it's aggressive and focuses exclusively on punching to the upper body. It's high energy, and so is good for fitness, but as a practical means of self defence it lacks a creative thrust and counters to attackers who are less likely to play by the rules.

