How do researchers in psychoneuroimmunology explain the phenomenon that people living under stressful conditions tend to get sick more often than they would otherwise?
A. The stress response in the long run leads to a lowering of the heart rate, which makes the heart inefficient.
B. The stress response makes muscles stronger, which places a greater burden on the heart and respiratory systems.
C. The stress response reduces immune system functioning, thus making us more vulnerable to diseases.
D. The body tends to adapt to the constant call for the stress response; thus, future responses are not as strong as before.
Answer: C
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a. True b. False Indicate whether the statement is true or false
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