Masturbation is also masturbation, often masturbation sperm quality is generally not affected, so there is no good argument.
If men often masturbate, they may feel guilty about themselves, dizziness, mental fatigue, often masturbate will also lead to men’s penis is in a state of long-term congestion, reduce the local resistance, it is easy to be infected by bacteria or viruses, local diseases.
Although frequent masturbation will cause more harm to the body, but generally will not affect the quality of sperm. Neither will it make the quality of sperm better nor worse, but it may affect the number of sperm to reduce.
To summarize, masturbation generally does not affect sperm quality, but frequent masturbation is not recommended.