Article: Why do I run out of breath when I run?(Ask Dr. Cory)

Dear Gretchen,

You run out of breath, or find it harder to breathe, because the muscles that help you breathe get tired. Here's why.

When you run, your body needs more oxygen. To get this oxygen, the muscles that help you breathe have to work harder than usual. If you don't run often, these muscles don't ...

Related newspaper, magazine, and journal articles:

 
 
Newsweek Harper's Magazine The Washington Post Chicago Tribune Crain's Chicago Business PRNewswire Pediatric News The Nation Advertising Age The Economist (US) A FREE trial gives you access to over 80 million articles! Access over 6,500 publications with a FREE trial!