Thin pants have a squeezing effect on limbs, affecting the blood circulation of the lower body and lower limbs, easily causing perineum and even pelvic congestion, reducing local resistance and leading to inflammation; The muscles of lower limbs are squeezed, and the movement is limited. After a long time, it is easy to cause chronic muscle degeneration. It is recommended to be loose and not to wear tight (thin) pants for a long time.