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Here's why you shouldn't just try to shake off hard hits.
Men naturally have a better sense of direction than women.
The emotional part of your brain is a lot like your girlfriends.
Six surprising ways you're wrecking your hearing.
What you need to know about Restless Leg Syndrome.
Infographic: How body traits reveal your risk for future ailments.
Smith takes on the NFL as the doctor who discovered CTE.
"Brain fart" and "beer o' clock" are also on the list of new words.