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Cold air often is dry air, which irritates the lining of the lungs. This causes cracks and swelling, which can exacerbate or bring on asthma. In addition, viruses thrive in cold weather, which is why winter is flu season. To help your lungs handle the chill, wrap your scarf over your mouth and nose to moisten the air before you inhale.
This content originally appeared on doctoroz.com
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