笑吧，老师们，笑吧（2）
ho so seriously? my recommendation is simple—laugh, teachers, laugh!
psychologists have long believed that negative emotions cause negative chemical changes in the body. ood sense of humor has better healing qualities. laughter actually relaxes the muscles, sloher stirs the inside and gets the endocrine2 system moving, disease. laughter also relieves boredom, tension, guilt, depression, headaches, and backaches.
each time you chuckle or “crack up”, your brain releases the body’s natural pain-killing hormones. those hormones trigger the release of endorphines, natural opiates that can reduce pain. these same hormones are responsible for making the eyes sparkle and getting the brain to hter can produce a great deal of relaxation. s you before.
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