Researchers at Pennsylvania-based Wilkes University found that making love just once or twice a week significantly increases your levels of flu-fighting antibodies, possibly because it may expose you to more germs, revving up your defenses.
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The 2014 Adventure Issue
From Iceland's Highway 1 to Utah's Canyonlands, an epic itinerary for modern explorers.
Plus: Building a Bigger Action Hero
ON NEWSSTANDS NOW
The Interpreters We Left Behind
The Rise of Cyclocross
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