Key Takeaways Strong heart health means your heart and blood vessels, aka your cardiovascular system, are working efficiently ...

The heart rate zone formula is flawed, especially for women. Here's how to rethink your training. These days, everyone from ...

Whoever we are, whatever we’re doing, we have a measurable heart rate. It’s a pretty clear sign of being alive. But what should your heart rate be when exercising? When we exercise, our heart rate ...