- Spermatozoa crossing extremely long way
Since spermatozoa are not bigger than 0,6 mm, they always need to pass a long way (for them) of about 15 cm in order to get to the egg. Compared to human`s measurements, that would mean- a person from 1,80 m to pass a hike route of 5,5 km, which I quite a long distance.
- Not all spermatozoa are in shape!
Although men hate the fact that not all spermatozoa go directly toward the target, it happens to be true. In one ejaculation of 40-600 million spermatozoa, just one half of them are healthy and pointed to the proper direction while the other half are useless