Most people have been out of breath after climbing the stairs — but is that normal?

Climbing up sets of stairs is a natural part of life, but it's one that can easily leave you bent over and gasping for air. Even if you regularly work out, or maintain your endurance on fitness ...

After being in a wheelchair for two years and going through a major surgery and months of physical therapy, learning how to walk again, I was proud and tearing up when I climbed up the flight of ...