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Sunshine good for bone health, everyone would already know. But did you know that sunlight is also good for the quality of sperm? So for infertile men do not worry, you should more often leave the body exposed to the sun. Recently, a study conducted on 340 men, found that vitamin D is produced by the body when exposed to sunlight, it can improve sperm quality. Sperm-sperm had been "a swimmer" better as it moves toward the egg cell, has a greater speed, and more penetrative.