sperm regeneration time Sperm formed inside the testicles. A male body keeps producing sperm regularly. But it takes almost 74 days to make sperm from start to beginning. You can improve your sperm regeneration time by consuming healthy diets like including fruits and vegetables in your diet and consuming citrus fruits will be a plus. Visit: https://www.photofrnd.com/post/89794_what-is-sperm-made-of-sperm-may-be-microscopic-but-they-039-re-nature-039-s-tiny.html