In case you haven't heard, Americans get more antioxidants from coffee than any other source.  And according to research at Harvard, coffee drinkers have a lower risk of stroke, Parkinson's disease, Type 2 diabetes, and some types of cancer.

That doesn't mean chugging cup after cup is GOOD for you, but there ARE a few benefits.  Now, here are three MORE bad habits that can ALSO have positive side effects.

 #1.)  Smoking.  Overall, it's one of the worst things you can do for your body.  But in one study, elderly patients who used nicotine patches for six months showed improved long-term memory and a better attention span.

So the NICOTINE in cigarettes might make you sharper . . . but everything else in them will kill you.

#2.)  Drinking.  A 20-year study of nearly 2,000 people showed that even HEAVY drinkers tend to outlive people who don't drink at all.

And a study at the University of Auckland found that moderate amounts of alcohol tend to improve the memories of lab rats.

Since Americans love to drink . . . we've actually been studying this for a long time:  Back in 1967, a study of more than 6,000 people showed that having between one and 30 drinks per week could significantly improve brain-function.

#3.)  Playing Video Games.  Obviously it shouldn't be the ONLY way you spend your free time.  But more and more research shows the benefits of it.

In one study, adults who played action-based games were able to make accurate decisions about 25% faster than people who didn't.

And SERIOUS gamers were able to pay attention to more than six things at once . . . which means it also helps with multitasking.