If you are 13 years old, which math problem would give you your maximum heart rate?

If you are 13 years old, what is 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 the lower range or your target heart zone? Response area

What would be the upper limit? Response area

To find your maximum heart rate at 13 years old, you can use the formula: 220 - age

This would be: 220 - 13 = 207 beats per minute

Therefore, your maximum heart rate would be 207 beats per minute.

To calculate your target heart rate zone, you can use the formula: (0.7 * 207) and (0.85 * 207)

This calculates to:
Lower range: 0.7 * 207 = 144.9 beats per minute
Upper limit: 0.85 * 207 = 175.95 beats per minute

Therefore, the lower range of your target heart rate zone would be 145 beats per minute and the upper limit would be 176 beats per minute.