Which aspect of Type A behavior is most hazardous to the heart?

Question

Quizplus · Accepted Answer

The most hazardous aspect of Type A behavior to the heart is cynical hostility, as it has been linked to increased risk of heart disease and other health problems. Working hard and being in a hurry may be stressful, but they are not necessarily directly linked to heart disease. Irritability in traffic or general grumpiness may cause stress, but they are not specific to Type A behavior.

Which Aspect of Type a Behavior Is Most Hazardous to the Heart