Exercise is attached to a long list of benefits we've heard before: better sleep. More energy. A longer life. Recent research out of the University of North Carolina in Chapel Hill, however, reveals that men who work out intensely may have lower sex drives than those with more relaxed gym routines.
For the study, published earlier this month in Medicine & Science in Sports & Exercise, researchers asked 1,077 physically active men detailed questions about how often they thought about and had sex, as well as how often and how hard they exercised. Then, the researchers divided the men into groups according to workout frequency, workout intensity, and how horny they were, controlling for age.
The results were clear: the guys who worked out the hardest and longest had the lowest libidos of any group in the study. Researchers don't know exactly why this was—this study didn't establish causation, only correlation—but they theorize that lower post-exercise testosterone levels and plain old exhaustion might be to blame. And while the sample size in this study was pretty small, the researchers say it's worth a shot for guys who are struggling with sexual desire to ease up on the marathon gym sessions and see if that helps—at the very least, they'll have that much more to time to spend between the sheets.
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This article originally appeared on Cosmopolitan.com. Minor edits have been made by the Cosmo.ph editors.