Scrotum is cold, what's the matter?

Testicular temperature should be slightly lower than other parts of the body (except the earlobe), because the most suitable temperature for sperm is 35 degrees. If it is higher than this temperature, the vitality of sperm will decline, so frequent sauna bath will have a certain impact on the quality of sperm. In general, if people feel hot, the body's heat can't be released in time. In addition to sweating, the scrotal skin will be "thinner", the scrotum will sag and "far away" from the body, which will make the high pill less affected by body temperature. If the weather is cold, the scrotum needs less "heat energy", then the scrotum will "thicken" the skin and contract to the body, relying on the body temperature to "maintain" the required temperature. Because there is a certain "difference" between the normal temperature of the scrotum and the required temperature, and it is lower than the body temperature, I always feel cold when I touch the scrotum myself.