EXERCISE AND STRESS A Yale University study conducted over 20 years ago involved actors and exercise. The researchers used actors because of their ability to access emotional states. The actors were divided into two groups. The first group was asked to make themselves angry. They worked themselves up by imagining frustrating and disturbing situations. The second group was asked to remain as calm, peaceful, and stable as possible. Both groups were monitored for physiological functions, including heart rate, blood pressure, and respiration. They were then asked to engage in various forms of
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