When they get sexually stimulated, could be in the form of masturbating, or sexual intercourse.
Women do not have sperm. They only have eggs. The male releases sperm when he ejaculates.
It is neither good or bad.
Its called premature sperm. Its when a man releases sperm earlier than the woman during sexual intercourse.
No, old men do not have worms in their sperm. Sperm will be healthy even when a person is not.
No, the semen and sperm is the same for all men. What can change it is your diet.
Women don't have sperm.
Men produce sperm for the purpose of reproducing.
Ew. And no. I assume by 'men sperm' you mean human ejaculate. That is disgusting.
A women is not capable of releasing sperm. Women release eggs. Only a male (man) can release sperm from their body. When sperm and a fertilized egg combine, a baby is made.
No. Only men produce sperm.
A man that has had a vasectomy does not release sperm, however, he does ejaculate.
Most Men can and do produce sperm all their life, Unlike women, men produce live sperm continuously throughout their life. As they age, the ability to get an erection may impeded their ability to deliver it, and new research shows that it is not as lively & vigorous as men age, but most men produce sperm from Puberty throughout their lifetime.