Well-written and well-researched article about the brain science behind sexual choices we make. Even those here who pretend to be "above" such low-vibe stuff as sex and lust might be interested in point #6, which explains why people shout "Oh God!" while having sex. :-)
http://www.salon.com/2013/01/16/10_ways_the_brain_dictates_sex/ The writer, Liz Langley from Alternet, is also very funny, which helps when discussing anything as silly as sex and the amount of time and energy people spend on it.