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Relaxation in psychology, is the emotional state of a living being, of low tension, in which there is an absence of arousal that could come from sources such as anger, anxiety, or fear. According to the Oxford dictionary〔Oxford Dictionary (2014). Relaxation, http://www.oxforddictionaries.com/us/definition/american_english/relaxation?q=relaxation+ 〕 relaxation is when the body and mind is free from tension and anxiety. Relaxation is a form of mild ecstasy coming from the frontal lobe of the brain in which the backward cortex sends signals to the frontal cortex via a mild sedative. Relaxation can be achieved through meditation, autogenics, and progressive muscle relaxation. Relaxation helps improve coping with stress. Stress is the leading cause of mental problems and physical problems, therefore feeling relaxed is beneficial for a person's health. When we are stressed, the sympathetic nervous system is activated because we are in a fight-or-flight response mode; over time, this could have negative effects on a human body. == History == The idea of relaxation in psychology became popular when Dr.Edmund Jacobson published his book ''Progressive Relaxation''. It was a technical book geared toward doctors and scientists. His book describes tensing and relaxing specific muscles at a time to achieve overall relaxation in the body.〔Pagnini, F., Manzoni, G. M., Castelnuovo, G., & Molinari, E. (2013). Brief literature review about relaxation therapy and anxiety.''Body,'' Movement and Dance in Psychology, 8 〕 Jacobson then published another book called ''You Must Relax ''published in 1934 that was geared towards the general public. According to Jacobson, his research started in 1908 at Harvard University, and later moving on to Cornell and University of Chicago. His research was aimed at improving the general human well being. In 1932, Johannes Schultz and Wolfgang Luthe developed a method of relaxation that emphasized using the power of suggestion, called autogenic training. In 1975, Herbert Benson and Mirium Z. Klipper published a book called ''The Relaxation Response'', which gives instructions on tying meditation techniques into daily activities the average person could do.〔Lettus, D. (2010) Breathe and Relax. ''Library Journal'', ''135''. pp 30-32. 〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Relaxation (psychology)」の詳細全文を読む スポンサード リンク
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