For answers, I spoke with Leslie Bonci, director of sports nutrition at the University of Pittsburgh Medical Center and a certified specialist in sports dietetics.

A University of Pittsburgh Medical Center researcher found that people over 65 who walk at a pace of at least 2.5 miles per hour live longer than those who don't.

Vascular surgeon Jeffrey Isenberg, now at the University of Pittsburgh Medical Center, and colleagues were studying how the gas nitric oxide promotes blood flow.