The use of the laptop on the male's legs can affect the formation of sperm due to the heat produced by the computer's battery, which increases the temperature of the testicles.
An increase in scrotal temperature of more than 1ºC from the initial value may inhibit spermatogenesis. This happens when the laptop is used for long periods of time and very often. It is therefore best to use a table or other support for the laptop and not to place it directly on the body.
Suggested for you: Semen Quality : What Is Measured And What Can Be Done To Improve It?.