Justin Bieber's One Time

No, except insofar as virgins tend to be young, and young people are more fertile. Semen quality, a key factor in male fertility, tends to be highest in the late teens or early 20s, and then gradually declines over the rest of a man?s life. The key factors in determining the quality of an ejaculate are its sperm count, the morphology of the sperm (whether they have a normal and healthy shape and size), and whether or not the sperm are good swimmers (urologists call this motility). As men age, all three of these measures decline. Furthermore, testosterone levels, which are crucial to the production of sperm, also reach their peak among men between the ages of about 18 and 20.

Source: http://feeds.slate.com/click.phdo?i=5b5a5d3946038f17fa295fb74e817cab

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