The point is, many people rely on those numbers even if they're not working. The most common question I hear is: "I'm working in my target heart rate zone and barely breaking a sweat. Should I keep working at this pace or change what I'm doing?"
I tackle this question in my latest FAQ, Is my target heart rate calculation accurate? Maybe you'll find new ideas for how to use your target heart rate calculations to your advantage.
Do you have any thoughts or suggestions about target heart rate? Leave a comment and tell us what you think.