Yet it explains many other things too, including why one testicle is usually slightly lower than the other, why the skin of the scrotum becomes more taut and the testicles retract during sexual arousal, and even why testicular injuries--compared to other types of bodily assault--are so excruciatingly painful to men.
That's right, low-hanging testicles sometimes less graciously referred to as saggy balls.
I suppose if it's something we're actively focusing on as it's happening, we can be a bit aware of it.
This up-and-down action happens on a moment-to-moment basis, thus male bodies continually optimize the gonadal climate for spermatogenesis and sperm storage.
Description: Usually they will sag if it's warm and you are wearing loose briefs or boxers.