Just as with the soldiers, a small hole was cut in the side of a beating heart and a finger was inserted to find and very carefully widen the narrowed valve. Early results were disastrous ...

While it’s easy to feel overwhelmed by the thought of making big changes, it’s important to understand that small, consistent adjustments can lead to significant improvements in heart health.

Your average daily heart rate is a useful metric; so is your daily step count. Combining the two might be even better. By Matt Richtel Many people use a smartwatch to monitor their cardiovascular ...