The testis which is the prime male reproductive organ displays temperature sensitivity, and the inadvertent heat exposure may result in reduction in sperm quality and quantity; this explains why the testes are normally situated externally in the scrotum unlike the ovaries in females, escaping the relatively high core body temperature. Sources of heat exposure are multiple e.g. heat emitted from laptops especially when placed over the thighs, frequent use of saunas, hot tubs and heated whirlpools, wearing tight pants and under garments and working close to heat source as in factories or in front of ovens.