Become a male
Your body digests the semen so there is no way.
The urethra is the passageway for semen as it leaves the male's body. In the male, the urethra carries semen and urine, while in the female the urethra only carries semen.
Conserving semen has no benefits. It is a myth (wrong belief) that conserving semen is good.
Yea, wasting semen's causes harm to human body. Because one drop of semen's is produced from 40 drops of blood. Therefore if any male do not waste semen's by way of lesser sexual activities, it will be reflected in his body outlook and overall health.
The same as anything else you digest
wetdreams
No semen does not cause any body pain at all.
Yes, the semen is excreted in the form of faeces or urine.
None. Your body produces more semen every day.
NO.
It doesn't.
There is no way to not allow semen to come out of the body, short of having your sexual parts malfunction or removed. If a male does not ejaculate manually or through intercourse, the body will expel excess semen, which is constantly manufactured, through nocturnal emissions, or "wet dreams."