Photo: Johnny Miller

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Hit the Sheets Earlier
When young women got more sleep, they were 14 percent likelier to engage in partnered sexual activity the following day, research from the University of Michigan found. “These results were independent of any beneficial effects on mood and energy. The bioavailability of sex hormones such as testosterone, which has been linked to sleep quality and quantity, may play a role,” says lead study author David Kalmbach, PhD. — Ginny Graves