As the temperatures drop, it's a cue for some people to head indoors, take cover and sip cocoa. To the more health-conscious crowd, it means heading to the gym.

Then there are always those dedicated few you see out running, biking or walking in weather cold enough to make even the proudest Yankee shiver. Along with this near-frostbitten badge of courage comes runny noses, body aches, fevers, sore throats and coughing spells that can mean only one thing -- cold and flu season is upon us.

So what's an exercise buff, or even those who consider themselves workout amateurs, to do in this cold and cold season?

There are some steadfast rules when it comes to exercising in the cold:

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