The issue of sex as exercise, however, has remained largely unexplored. “There are these myths,” including that sex burns at least 100 calories per session, said Antony D. Karelis, a professor of exercise science at the University of Quebec at Montreal who undertook a study, published in PLOS One in October, to look at how much energy is actually exerted during sex. “But nobody had tested” those assumptions.
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Gracie Passette