Thanks to your query. The reply is hormones. For folks with a penis and testicles, throughout puberty will increase in testosterone ranges (together with different hormone modifications) result in modifications within the measurement of their penis and testicles. It additionally causes sperm manufacturing. You might discover sperm in your urine and nocturnal emissions.
Nocturnal emissions is the medical time period for “moist goals.” Nocturnal means at evening. Nocturnal emissions are when you may have an orgasm or ejaculate in your sleep.
Additionally, should you get sperm in your mattress sheets, washing your sheets in a daily laundry cycle with detergent will do away with any sperm.