In an endothermic reaction, the opposite happens. In this reaction, heat is absorbed. Or more exactly, heat is required to complete the reaction. Photosynthesis in plants is a chemical endothermic reaction. In this process, the chloroplasts in the leaves absorb the sunlight.
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.
The TV show UFC and MMA make martial arts even more interesting for people, while young women and kids that also have a desire to learn self-defense are gravitating towards learning these skills. When people talk about martial arts, the first things that come to mind are combat and self- defense.