Guys, don't keep your phone in your pocket.

This, because a study by Technico medical school in Haifa in Israel has found that keeping the telephone in your pocket gives a serious blow to a man's sperm, making it less fertile.

Fertility experts examined 100 males who were visiting a fertility clinic for a year and found that men who put phones in their pants pocket but “played sperm” and significantly lowered its levels.

Researchers believe that this is being caused by the electromagnetic activity the telephone produces.

The study also found that men sleeping with the phone on their bed also had a drop in sperm levels compared to men who did not sleep with phones in their vicinity, broadcast news.net

A similar study that examines the effects of smartphones on female fertility has not yet been developed.