Science of sperms:  actually when we masturbate,ejaculate or have sex only sperms are not released,the fluid that we realease is called semen that consist of many more components such as prostatic fluid,seminal fluid.
These all are responsible for creating a suitable medium and lubrication of penis.
Problems after masturbation:while we masturbate or sex calcium,fructose and some other components are also realeased that's why we feel weakness.regular masturbation can cause various problems.according to studies masturbation once a week is harmless.regular masturbation can cause:
Shrink of brain
less sperm motility
less sperm production
Rammed eye balls
Increase in specs power

Abnormalities related to sperms:
It may be possible that is sperms are not available in your semen and this condition is called azospermia.
Sometimes the semen is of very low sperm count the condition refers to oligospermia
A Condition where no living sperm present in your semen called Necrozoospermia
Condition where there is sperm of low motility Asthenozoospermia.

Habits that can stop to develop infertility in males
1.do not work for hours placing the lapi on thigh
2.eat less oil or use oil free brands
3.do not take stress and try to be happy
4.try to exercise daily