According to a study published last July in Proceedings of the National
Academy of Sciences, a 90-minute walk through a natural environment had a
huge positive impact on participants. In a survey taken afterwards,
those people who took the natural walk showed far lower levels of
brooding, or obsessive worry. The control group who spent that 90
minutes walking through a city reported no such difference. Not only
that, but the scientists went a step further and did brain scans of the
subjects. They found that there was decreased blood flow to the
subgenual prefrontal cortex. What in the world does that mean? Well,
increased blood flow to this region of the brain is associated with bad
moods. Everything from feeling sad about something, to worrying, to
major depression seem to be tied to this brain region. Hiking
deactivates it.
http://www.wimp.com/what-hiking-does-to-the-brain-is-pretty-amazing/
And I bet your doctor does not have any prescription for you to go thru a natural area.
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