In 2012, Ronda Rousey said she likes to have "as much sex as possible" before a big fight because it boosts her testosterone.
Turns out, she may be on to something.
A new analysis from the University of Florence in Italy, published in the journal Frontiers in Psychology, examined hundreds of studies and found no connection between pre-competition sex and lowered athletic performance. It also determined that any connection was based on anecdotal stories, rather than scientifically reported studies.
"In fact, unless sex takes place less than two hours before, the evidence actually suggests sexual activity may have a beneficial effect on sports performance," lead author Laura Stefani says.
As for Rousey's claims that sex boosts a woman's testosterone, "there has been some research that's found that," says Sari Locker, Ph.D., a sex educator at Columbia University. But she reiterates that sex doesn't cause much physical effect.
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