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

Even if you can run a 5K with ease, crush a 45-minute spin session, or power through a HIIT class, that looming flight of stairs can make you really start to doubt your fitness prowess—especially when ...

Most of us know walking is a decent way to stay active. But when you’re thinking about burning calories efficiently, stair climbing quietly steals the show. On days when your schedule feels packed, ...