Do get mad.

The article discusses how anger, when used in the right way, can be constructive. Topics include society's view of anger as a destructive emotion, the physiological aspects of anger, when and how anger can be constructive, and a study by Harvard University researcher Jennifer Lerner and colleagues that found people made angry by a stressful situation exhibited a lower biological response, in terms of blood pressure and levels of stress hormones, than those who were fearful.