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Stress often causes muscles to A. contract and tighten. B. bruise more easily. C. resist exercise. D. increase in pain.
Stress often causes muscles to D. increase in pain.
Expert answered|andrewpallarca|Points 24372|
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Asked 8/7/2013 4:55:45 PM
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brittany1985, you have been reminded already to answer in a complete sentence by restating the question and provide a source that verify its accuracy.

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Added 8/7/2013 7:13:59 PM
Stress often causes muscles to A. contract and tighten. B. bruise more easily. C. resist exercise. D. increase in pain.
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Updated 10 days ago|3/19/2015 11:36:10 PM
1 Answer/Comment
Stress often causes muscles to contract and tighten.
Added 10 days ago|3/19/2015 11:36:10 PM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by yumdrea [3/19/2015 11:43:08 PM]
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2 Answers/Comments
A. Erythropoietin is a performance-enhancing drug which has the side effect of thickening of the blood.
Added 8/7/2013 5:32:27 PM
brittany1985, your answer does not relate to the question.
Added 8/7/2013 5:34:25 PM
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