It is a normal physiological phenomenon for men to expel sperm once a month.
First of all, male sperm is produced by the testicles, and then and stored in the testicles, when having sex after orgasm will be discharged. This is a normal physiological phenomenon.
If there is no intercourse for a long time, it may lead to too much semen stored in the testicles, and then seminal emission or commonly known as wet dream may occur. This is what you call seminal emission, and it is normal if it happens once a month.
These are normal physiological phenomena, after the discharge of semen timely cleaning, to avoid a long time breeding bacteria, easy to cause urinary tract infections, sexual life should be stabilized too often or too little, there is a certain amount of damage to the body, don’t worry too much, keep a good mood, adjust the normal work and rest, and more supplemental nutrients, such as other discomforts in a timely manner to seek medical attention.