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Semen volume and exercise

A study in the medical journal, Fertility and Sterility, shows that the only sexual change caused by hard exercise is a decrease in the volume of a man's semen.

Twenty-four marathon runners had their blood and semen checked regularly as they increased their training for competition. All sex hormones remained the same except for an increase in the hormone, prolactin, which did not affect their ability or desire to make love. The only change in sexual function was a decreased volume of semen.

Getting in shape won't make you a better lover because making love takes only the amount of energy required to walk up two flights of stairs. If you can walk up two flights of stairs, you can make love, but exercising too much can make you too tired to make love. By the time that happens, you will probably have sore muscles all the time, will hate exercising, and probably be headed for an injury.

1) CE Jensen, K Wiswedel, J Mcloughlin, Z Vanderspuy. Prospective study of hormonal and semen profiles in marathon runners. Fertility and Sterility 64: 6 (DEC 1995):1189-1196.

2) McConnell, T.R. and Sinning, W.E. Med Sci in Sports and Exercise 1984;16(1):51-55.

3) NEJM 1980;303:112.

4) Med Aspects of Human Sexuality 1980;14(9):121

May 16th, 2013
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About the Author: Gabe Mirkin, MD

Sports medicine doctor, fitness guru and long-time radio host Gabe Mirkin, M.D., brings you news and tips for your healthful lifestyle. A practicing physician for more than 50 years and a radio talk show host for 25 years, Dr. Mirkin is a graduate of Harvard University and Baylor University College of Medicine. He is board-certified in four specialties: Sports Medicine, Allergy and Immunology, Pediatrics and Pediatric Immunology. The Dr. Mirkin Show, his call-in show on fitness and health, was syndicated in more than 120 cities. Read More
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