Sperm

Sperm How do you avoid the leak when speak to lover?
How do you avoid the leak when speak to lover?
What does it mean when a man leaks? Sometimes, men leak semen when they're sexually aroused, before or after ejaculation. It usually is not a cause fo...
Sperm Do you know which one has a Streamlined head egg or sperm cell?
Do you know which one has a Streamlined head egg or sperm cell?
Why do sperm cells have a long tail and a streamlined head? The sperm cells are streamlined in design for this purpose a long tail to help them move, ...