- Human ejaculation has an average of 250 million of released sperm. From this only 50% swims in the right direction, the others just swims in no sense circles to a low motion or doesn´t have any motion
- The quality of sperm on a healthy man increase if he ejaculate frequently, giving this way better chances to fertilization of an ovule.
- Semen is not only composed by sperm, less than 10% of its volume in corresponds to sperm and more than 90% to seminal fluid.
- In average each man produces 4.4 million of sperms by testicle gram or likely 150 million of sperm in both testicles, assuming that the weight of each testicle is around 34 gr.