Cardiologist Dr. Puneet Verma shared a simple 3-minute "step test" to assess cardiovascular fitness. Participants step up and ...

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 ...

While walking, hiking or doing other cardiovascular exercise, 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 you ...

While walking, hiking or doing other cardiovascular exercise, 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 you ...