Since the beginning of time, people have tested themselves against others in various forms of hand-to-hand combat. Although it was sometimes done as an act of aggression or survival, hand-to-hand combat has evolved into various types of combat sports throughout the world. Some of the most popular ones, such as boxing, wrestling and judo, have been around for centuries and are practiced in the Olympic Games. There are many types of combat sports under the umbrella of martial arts and if you look around you'll find martial arts and boxing clubs popping up all over the place. People find combat sports an excellent way to learn self defense and discipline, as well as test skills one to one.