Just read my free Motorcyclist magazine, there was an article in it titled "Risk" that talked about risk takers having less of an enzyme called monoamine oxidase which helps to break down dopamine and how risk takers were found to have lower levels of dopamine. It states that monoamine oxidase levels increase in women as they age. The article discusses that genetics could play a role in the whole pushing it to the limits thing.
Last edited by tached1000rr; 06-15-2009 at 08:58 PM..
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