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A 2008 Texas A&M University study found an ingredient in watermelon called citrulline-arginine helps relax blood vessels by boosting nitric oxide in the same manner as Viagra—effectively treating erectile dysfunction and maybe even preventing it. A 2011 Harvard study found that men who indulge in processed foods high in trans fats (cookies, cakes, chocolate, chips, and fried and processed foods) had poorer-quality sperm than those who followed a healthy diet (whole grains, vegetables, and fish). Men who watch more than 20 hours of TV weekly have a 44% lower sperm count than those who watched almost no TV, according to a 2010 study from the University of Rochester.The researchers found that healthy men who were sedentary, as measured by their television viewing habits, had poorer sperm quality because of their lack of physical activity.Likewise, a 2014 study from the University of Sheffield analyzed sperm samples of 1,970 men.The researchers found that less than 4% of the 318 cannabis-users’ sperm were the correct size and shape.According to the National Institutes of Health (NIH), your sunscreen can help prevent your risk of skin cancer, but up your odds of suffering from infertility.Certain chemicals—UV filters BP-2 or 4OH-BP—which protect against UV rays, may reduce a man’s ability to reproduce by up to 30%.The participants also self-reported the quality and extent of their sexual function, including their ability to have erections, orgasm and the quality and frequency of their erections.
Here’s some added motivation to complete those muscle-ups.
Bacteria in your gum tissue can travel through your body, inducing inflammation and damaging the blood vessels in your penis, according to the 2012 study.
You’ll wish bad breath was the only side effect of your lazy dental hygiene.
Poorly developed sperm are less likely to make their way to fertilize a woman's egg—keep that in mind, Smokey.
How’s this for a win-win: The more sex you have, the less likely you are to suffer erectile dysfunction, according to a 2008 study published in Researchers analyzed 989 men aged 55-75 over a five-year span.