“Are you OK?” a medical school classmate asked when I snuck back into the lecture hall. I had just learned that I bombed arguably the most important test of my life. I was not OK. I was employing ...

We all know that climbing stairs can be a bit of a workout, but did you know it could also be a quick, effective, and free way to assess your heart health? This simple activity is now being recognized ...

While walking or using the stair-climber or another cardio machine, you might focus on your breathing or heart rate to gauge how hard you’re working. That’s a perfectly good approach—but it won’t tell ...