The American Psychological Association has noted: “Stress is to the human condition what tension is to the violin string: too little and the music is dull and raspy; too much and the music is shrill or the string snaps.
American Psychological Association mengatakan, ” Stres pada manusia itu seperti kendur - kencangnya senar biola: jika terlalu kendur, suaranya sumbang; jika terlalu kencang, suaranya melengking atau senarnya putus.