What do girls think of boys wearing tights?

Boys should not wear too tight jeans, which is related to the development and structure of male reproductive organs and the living environment required by external genitalia.

Male sex organs are wrapped in scrotum, and testis is the place where sperm are produced. In hot summer, the scrotum will relax; When the weather is cold, the scrotum will shrink into a crumpled ball and stick to the body tightly. This shows that scrotum needs proper temperature, and it will adjust itself with the change of temperature.

Scrotal skin is very sensitive to external temperature, rich in sweat glands and without subcutaneous fat, which helps to dissipate heat. When the outside temperature is low, it stimulates the contraction of the smooth muscle of the sarcolemma and levator testis, so that the position of the testis is raised, and the scrotum skin shrinks into dense folds, which retract to the perineum to prevent heat dissipation and help to keep warm. On the contrary, when the external temperature rises, the smooth muscle and cremaster muscle relax, the testis descends, and the scrotal skin relaxes in vitro, which increases the heat dissipation area and is beneficial to local heat dissipation. In addition, the artery in the spermatic cord is wound on a bundle of parallel venous plexus, and the blood in the two vascular systems only flows reversely through the thin vascular wall, forming a countercurrent exchange system, and the venous blood constantly takes away the heat of the arterial blood in the abdominal cavity. As a result, the blood temperature of testicular artery is 5.2 degrees Celsius lower than that of abdominal aorta. Scrotum regulates the temperature of scrotum and testis through these mechanisms.

You must not underestimate the skill of scrotum, which is too important for human reproduction. Because temperature has a great influence on testicular spermatogenesis, the temperature in the scrotum is about 2 degrees Celsius lower than that in the body, which is the best temperature for spermatogenesis. If the temperature is too high, the spermatogenesis process will be hindered or even stopped completely, and the secretion of testosterone will also decrease. The failure of any of the above links will lead to infertility by affecting the regulation of scrotal temperature.

Some young men like to wear tight pants, especially chemical fiber "pocket pants" with poor air permeability and heat dissipation, which wrap the scrotum, so that the scrotum is in a closed state and the air is not circulated, leading to bacterial growth and reproductive tract inflammation; At the same time, it also hinders the scrotal skin from cooling down, restricts blood circulation, and hinders the return of spermatic vein, which is very unfavorable for sperm production and nutrition. In the long run, it will easily lead to the adverse consequences of infertility in the future.

Tight pants are beautiful, but they are unscientific from the perspective of reproductive health. When buying jeans, boys should choose slightly larger, breathable and cotton pants.