ririanproject.com — 10. Endorphins: The Natural High: When a person is physically active or is brisk walking for a certain period of time - about 20 minutes or longer - the body releases endorphins, proteins in the brain that act as the body?s natural pain reliever. When endorphins are released, a person may experience a feeling of euphoria.
Nov 11, 2006 View in Crawl 4
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It's quiet in here... can you hear the echo?