紧张是人人都曾体验过的一种心理现象,它对人体到底会产生什么影响呢? 一般来说,适度的紧张,可使人们的反应速度加快,动作敏捷,记忆力好,工作效率和学习效果自然就有明显的增强。譬如,学生在定期举行考试时,成绩往往比不举行考试时好一些。人们在从事某项有竞争性的工作时,往往也比从事没有竞争性的工作速度快、效率更高、质量更好。这就是因为考试和竞争使人们感到有压力,保持了适度紧张的结果。某些突然发生的紧急情况时,尤其能提高思维的效果,“急中生智”说的就是这个意思。但是,医学研究表明,持续过久的紧张情绪,会大大增加体内儿茶酚胺释放的速度和数量。儿茶酚胺是一种神经介质,它的分泌增加会使心跳加快,血 Tension is a psychological phenomenon that everybody has ever experienced, and what impact does it have on the human body? In general, modest tension can make people’s response faster, agile, good memory, work efficiency and learning The effect is obviously enhanced naturally. For example, when students hold regular exams, grades tend to be better than when exams are not held. When people are engaged in a competitive job, they are often faster, more efficient, and of better quality than those who do not compete. This is because exams and competition put people under stress and maintain moderately tense results. In some sudden emergencies, it can especially enhance the effect of thinking. This is what “Jizhongshengzhi” said. However, medical research shows that long-lasting tensions can dramatically increase the rate and amount of catecholamine release in the body. Catecholamines are a type of neurotransmitter that increases the rate of heartbeat and increases blood flow