Male sperm pics
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Male Sperm Stock Photos and Images
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Description:It was suggested that the appeal of images depicting sperm competition could be explained if heightened sexual arousal resulting from viewing such images arose due to an evolutionary history of sperm competition. If a guy could coax all the sperm in one ejaculate to line up end to end, they'd stretch six miles. Scientists don't know why obesity correlates to low sperm count, but a recent French study found that obese men were 42 percent more likely to have low sperm count than their non-obese counterparts. Eat plenty of fish, meat, eggs, fruits and vegetables. On the one hand, if viewing images of two males and one female was perceived in the context of sperm competition risk we would have expected an increase in sperm concentration Parker et al.