Quantity (volume). A healthy sperm count is about 15 million or more for every milliliter (mL) of semen. The more you have, the more likely one of them will make it through the female reproductive system to an egg.
Movement (motility). Not every sperm moves effectively or even at all, but this is normal. Only about 40 percent or more of them need to be movin’ and groovin’ for you to be fertile.
Shape (morphology). Healthy sperm have rounded heads and long, strong tails. Shapely sperm are more likely to make it to an egg.