Judo is an effective martial art and an Olympic sport. Judo is not all about physical but moral and mental teaching as well. While learning this sport you will learn balance, static and dynamic with the development of speed, power, and flexibility. But judo is not dangerous enough if anyone uses it as a hobby or as a form of learning or exercise.
Karate is a Japanese martial art that makes you use your entire body for self-defense. A widely popular sport that incorporates the entire body including punching, kicking, throwing, elbows, and strikes with full force. Karate is different from deadliest martial arts as it focuses both on the mind and body as well. But Karate could be the deadliest martial art in the world if a fighter works with a focused mind and fully trained body.