The testicle normally should Be located on inside scrotum, that it is is what 1 ground must Be located on inside scrotum?If you consciously observed once, can discover the testicle of mammal generally and all outside body, this kind of structure relates to fertility.The temperature of mankind's testicle needs to be keep about 34 degrees, only in all aspects such of under the temperature, the testicle then can normally produce sperm, the sperm then can spread all over vitality, the temperature lead Gao or lead low will influence the function of testicle.The temperature in the mammal belly cavity is generally all high at the temperature that testicle need.For multiplying greatly posterity, in the evolution process of living creature, the testicle nature grew outside body. For making the testicle keep the temperature that the opposite Heng settle, the scrotum has a count for much function.The skin wrinkly plait of scrotum surface increased scrotum surface to accumulate and more and so spread a hot function when the temperature go up;Annoy on that day strict and cold or outside when the genitals catch a cold, the scrotum can have to be very small by constringency and make the testicle close to warm belly cavity.So say the physiology characteristics of testicle and scrotum all with grow relevant.Wear the close fitting panties makes scrotum fixed to tightly depend belly cavity, as a result the scrotum regulates the function of temperature to be subjected to restriction, but make the testicle has been close to warm belly cavity, Gao and testicle function normally the temperature need and result in to living Jing function obstacle can with the result that not teach.So the man, who grew, is usually different to wear close fitting panties, should not wash a bath or mulberry that a bath, either, should not sleep electric blanket