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If you're focusing on moderate exercise, experts say you should be getting to 50% to 70% of your maximum heart rate. Intense or strenuous exercise is about 70% to 85% of your maximum heart rate.

If you’re short on time, Stoner recommends the three-minute step test as another alternative that offers a score of aerobic ...

Your heart rate zones might be completely wrong. Not only are zones defined differently in different apps, they are also ...

Running burns the most calories per hour. However, other exercises like walking, bicycling, and HIIT workouts are great ...

View this interactive chart on Fortune.com Smartwatches and other fitness trackers are great for people seeking detailed, ...