To find your target heart rate range, you first need to know your maximum heart rate. An exercise test can give you this information. But if you haven't taken an exercise test, you can get an estimate of your maximum heart rate by subtracting your age from 220.
For example, if you are 25 years old, your maximum heart rate is 220 minus 25, or about 195 beats per minute. If you're 48 years old, your maximum heart rate is 220 minus 48, or about 172 beats per minute. Your actual maximum heart rate can vary by as many as 25 beats per minute.
If you are older or have heart problems, therefore, it may be a good idea to have an exercise test performed at your doctor's office to find your precise maximum heart rate.
Next, find out how to use your target heart rate to make the most of your walking workout.
To learn more about walking, see: