endorphins

基本解释

Capsaicin, the substance that gives chilli its kick, also raises the body’s natural endorphin levels, which improve one’s mood.
辣椒素，是一种辣椒中具有冲击力的物质，它能提高人体机能的脑内啡水平，从而改善人们的心情。
Endorphin is a chemical secreted from one's own body that helps reduce stress, pain and creates a general sense of well-being and happiness.
内啡肽是人体自身释放的一种化学物质，用来帮助减压、镇痛，同时会让人产生一种幸福、快乐的感觉。
Endorphin is a chemical secreted from one's own body that helps reduces stress, pain and creates a general sense of well being and happiness.
内啡肽是人体自身释放的一种化学物质，用来帮助减压、镇痛，同时会让人产生一种幸福、快乐的感觉。
blog.sina.com.cn

Because endorphin levels can only be measured directly through an invasive lumbar puncture—unfeasible, even for notoriously pain-hungry oarsmen—the researchers used a readily accepted proxy: they deduced pain tolerance, and hence endorphin levels, by gradually tightening a cuff around each rower's arm.
ECONOMIST: Exercise and company