Want to know just how hard you're working? Here's how to find out.

Train for the moments climbs get messy—surges, steep pitches, and quick recoveries.

Most fitness trackers offer a wealth of heart-rate data. Here’s how to make sense of it. By Talya Minsberg If you wear a smartwatch or fitness tracker, you likely already have access to a steady ...

But Zone 0 won’t get you there. To build VO2 max, you need to raise your heart rate with purposeful effort, whether through ...

Understanding your heart rate is crucial for more than just reaching optimal fitness–it can also help to reduce injury and ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Jason Sawyer, Bryant University (THE CONVERSATION) Aerobic exercise like jogging, ...

If you spend a lot of time exploring fitness content online, you might have come across the concept of heart rate zones. Heart rate zone training has become more popular in recent years partly because ...

Peloton had a series of Bike classes designed around heart rate zone training. Christine D’Ercole would tell you what zone ...

This secret to improving your cardiovascular health and endurance: zone 2 heart rate training. Zone 2 cardio rate training means working in one of five heart rate zones at 60-70% of your max heart ...

You don’t have to strain your knees by running miles to get your cardio in. In fact, if you’re looking to ease into fitness ...

Smartwatches estimate your heart rate using sensors that measure changes in blood flow through the veins in your wrist. This ...