Can extreme cold damage your lungs? Get answers from an expert who studies the lungs of winter athletes

<p>When arctic blasts cause temperatures to plummet, stepping outside can be dangerous. Frost bite can set in quickly. And if you've ever taken a deep breath in extreme cold, you know that it feels as if your lungs are freezing too. In this Health Fusion episode, Viv Williams talks to a researcher from Canada who studies what intensely cold air could do to athlete's (or anyone's) lungs.</p>