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.
Many martial arts, especially those from Asia, also teach side disciplines which pertain to medicinal practices. This is particularly prevalent in traditional Asian martial arts which may teach bone-setting, herbalism, and other aspects of traditional medicine. Spirituality-oriented. Martial arts can also be linked with religion and spirituality.