Here are some...: Getting good erection for procreation or pleasure requires all involved tissues, muscles, nerves being well-nourished, healthy, & working coherently in a seamless fashion like those for any parts or organs of the body do. Specifically, the genital organs can regulate blood inflow & outflow of the penis at right time in right way so to maintain penile rigidity for intercourse. More? Ask doc.
Answered 10/9/2017
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