If you are 12 years old, which math problem would give you your maximum heart rate? 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? Response area What would be your upper limit?Response area
To calculate your maximum heart rate at the age of 12, subtract your age from 220.
Maximum Heart Rate = 220 - 12 = 208 beats per minute (bpm)
To find your lower range or target heart rate zone, multiply your maximum heart rate by 0.7 for the lower limit and by 0.85 for the upper limit.
Lower Range = 208 * 0.7 = 145.6 bpm
Upper Limit = 208 * 0.85 = 176.8 bpm