If you are 12 years old, which math problem would give you your maximum heart rate? Response area
After finding your maximum heart rate, remember your target heart rate zone is 70-85% of you maximum heart rate, what would be your lower range or your target heart zone?
What would be your upper limit?
To find your maximum heart rate, you would subtract your age from 220. For a 12-year-old, it would be 220 - 12 = 208 beats per minute.
To determine the lower range of your target heart rate zone (70% of your maximum heart rate), you would calculate 70% of 208, which is 0.7 * 208 = 145.6. Rounded to the nearest whole number, your lower range would be 146 beats per minute.
The upper limit of your target heart rate zone (85% of your maximum heart rate) would be 0.85 * 208 = 176.8. Rounded to the nearest whole number, your upper limit would be 177 beats per minute.