Wanna give your swimmers a boost? Recent studies found that there are two dietary supplements which give men suffering with fertility problems faster, stronger sperm. In a study conducted by the Fertility and Sterility journal, infertile men who were tasked of taking two grams (g) of L-carnitine (a type of amino acid) and 1 g of L-acetyl-carnitine every day for six months exhibited increased sperm motility and number of motile sperm. During the study, four men impreganted their partners. In addition, carnitines are thought to provide a boost on athletic performance despite the lack of scientific support.
You can find these sperm improving supplements in red meat, avocados and various dairy products.

Source: Men’s Health