Jujitsu, also known as Ju Jitsu, Ju Jutsu, and Jiu-Jitsu, is an ancient martial art used by the Samurai warriors of war-torn Japan. The art itself
consists of punches, kicks, throws, ground-grappling, and weapons. Jujitsu techniques rely heavily on leverage, so you don't have to be extremely strong to train.
Japanese jujutsu systems typically place more emphasis on throwing, immobilizing and pinning, joint-locking, choking, and strangling techniques as compared with other martial arts systems such as karate. Atemi-waza (striking techniques) were seen as less important in most older Japanese systems, since samurai body armor protected against many striking techniques. The Chinese quanfa/ch'uan-fa (kenpo or kung fu) systems focus on punching, striking, and kicking more than jujutsu.
The Japanese systems of hakuda, kenpo, and shubaku display some degree of Chinese influence in their emphasis on striking techniques. In comparison, systems that derive more directly from Japanese sources show less preference for such techniques. However, a few jujutsu schools likely have some Chinese influence in their development. Jujutsu ryu vary widely in their techniques, and many do include significant emphasis on striking techniques, though in some styles only as set-ups for their grappling techniques.
In jujutsu, practitioners train in the use of many potentially fatal moves. However, because students mostly train in a non-competitive environment, risk is minimized. Students are taught break falling skills to allow them to safely practice otherwise dangerous throws.