MCQOPTIONS
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| 1. |
Additional evidence indicates that ___________________ also serve to intensify positive sensations- for example, the "runner's high" many peopleexperience after vigorous exercise. |
| A. | Endorphins |
| B. | Antagonist |
| C. | Agonist |
| D. | Serotonin |
| Answer» B. Antagonist | |