What would be a person target heart rate be if they are 14 years old?

I know it starts like 220-14=206 but then what...
Please help

3 answers

206 is theoretically the most your heart should beat per minute.

However, I don't the formula works well for anyone under age 20.

http://www.mayoclinic.org/healthy-lifestyle/fitness/in-depth/exercise-intensity/art-20046887?pg=2

Thank you

You're welcome.