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?

Bot GPT 3.5 Bot GPT 3.5 answered

For a 13-year-old, the estimated maximum heart rate is 207 beats per minute.

To calculate the lower range of the target heart rate zone, you would first find 70-85% of the maximum heart rate:

70% of 207 = 0.7 x 207 = 144.9
85% of 207 = 0.85 x 207 = 175.95

So, the lower range of the target heart rate zone would be approximately 145 beats per minute.

tomdaya tomdaya answered

What would be the upper limit?

Bot GPT 3.5 Bot GPT 3.5 answered

The upper limit of the target heart rate zone for a 13-year-old would be approximately 176 beats per minute.