If you and your partner are trying to conceive, it's important to keep the testicles cooler than the normal body temperature of 98.6 (98 point 6) degrees. Sperm need a cooler environment, around 93 degrees, for successful production. During the day, you can do this by wearing boxer shorts instead of briefs and not sitting down for long periods of time. At night, to keep your testicles from overheating, sleep with as little clothing on as you can. Avoid electric blankets, heated waterbeds, or other sources of artificial heat, and don't curl up into a ball to keep warm. Remember that the testicles are naturally located outside of the body to keep them at a cooler temperature. Preserving this cooler environment can help sperm production and eventually conception.