Adrenal gland disorders are caused by problems with one or both adrenal glands or by problems with other glands, such as the pituitary gland. Specific disorders can develop when the adrenal glands produce too few or too many hormones, or when too many hormones are introduced from an outside source. Cushing's Syndrome.
Martial arts. Martial arts are codified systems and traditions of combat practices, which are practiced for a number of reasons: as self-defense, military and law enforcement applications, mental and spiritual development; as well as entertainment and the preservation of a nation's intangible cultural heritage.
-Karate is a term for many different martial arts such as kyushin, shotokan, and goju-ryu. Like Katana said, Okinawan karate uses joint-locks, sweeps, punches, kicks, even stand up grappling. Many of the techniques in karate focus on power and strength that are way more than 20% effective in a fight.