Harvard researchers report that too much TV time might impact male fertility. The study involved nearly 200 healthy college students at the University of Rochester in New York. They answered questionnaires about their physical activity and supplied sperm samples. The young men who spent 20 hours or more watching television or DVDs each week had 44% fewer sperm than the students who spent the least time in front of the telly. Those who exercised at least 15 hours a week had sperm counts 73% higher than the men who got the least exercise.
[British Journal of Sports Medicine, Feb. 4, 2013]