Young Brunette Girl With A Laptop Strips On The Couch In The Living Room

Heat from using a laptop on the lap can also cause skin discoloration on the thighs known as "toasted skin syndrome".
A 2010 study of 29 males published in Fertility and Sterility found that males who kept their laptops in their laps experienced scrotal hyperthermia in which their scrotal temperatures increased by up to 2 C. The resulting heat increase, which could not be offset with a laptop cushion, may increase male infertility.