To what extent will the penis contract in winter?

Many objects seem to shrink when winter comes. At this time, the man also found a problem. When winter came, their little brother got scared and became smaller. What is this phenomenon? They are eager to know whether this is a normal physiological phenomenon.

Experts explained that this is actually a self-protection mechanism of scrotum. The scrotum has the characteristics of easy contraction and extension, so as to adjust the adaptive temperature of testis and keep the local temperature below body temperature 2-3 degrees Celsius, which is the best temperature for producing sperm. The contraction and relaxation of scrotal muscles and sarcolemma muscles can change the thickness and surface area of scrotum and the contact degree between testis and body. When the weather is too cold or the skin is stimulated by the outside world, the scrotal wall will contract and lift up. So we have been joking that "scrotum is the air conditioner of testicles".

The contraction of scrotum is also controlled by the emotional center or autonomic nerve center inside the brain. When you are frightened, the scrotum will rise or droop, and when you are nervous, the scrotum will contract-this contraction also reflects the psychological activities of men. If men are anxious and nervous for a long time, the degree of contraction will be more obvious, and even the illusion of "penis shortening" will be caused to men. On the contrary, when you are depressed, your scrotum will relax; When you are weak due to illness or aging, you may even become "timid".

It can be seen that in winter, it is normal for men's penis and scrotum to look smaller, so there is no need to be too nervous. It should be reminded that the temperature regulation and defense mechanism of scrotum is limited. When the temperature changes beyond the adjustment range, the physiological function of testis will be damaged.

In short, be kind to your testicles. For example, don't sit on a loose sofa for a long time; In our daily life, we should advocate wearing loose pants and give testicles a relaxed working environment to give full play to their physiological functions.