#5 Get More Vitamin D
Recent studies have shown that vitamin D can raise sperm count, boost testosterone levels, and increase the libido. The best source for vitamin D is the sun, but many people have a deficiency because they don’t spend enough time outside, or are always covered with sunscreen. A 25(OH)D test can tell you whether you’re deficient in this key nutrient. More sunlight is the best fix, but you can also take vitamin D3 supplements.