Desktop Exercising - Ask Norma
June 13, 2025
 

 


Search the Ask Norma QuestionBase by Keyword (i.e. work out, calories, etc.) or by Category
Search by Keywords
or View Questions by Category

or View All
View All

Question Details
Category
Abs
Date Submitted
2/19/2004
Date Updated
3/1/2024
Approval Level
Public
Question
I have heard that the formula to determine a healthy heart rate is 220- your age. Is this accurate information? I am 31, which would put my active heartrate in at 189, is this safe? Also, is this the heart rate that is just for cardiovascular, because when I am working out it suggests different heartrates for different types of workouts, such as fat burning, cardio, etc. Is there really such a thing as a varying heartrate that is safe depending on the type of exercize, for example is it ok to have a heartrate that high if you are biking and treadmilling but it should be lower say when you're doing a less stenuous workout?
Answer
The Karvonen formula is well known and used by many people. It is a way to estimate your heart rate zones. Remember, there is a 10% error either above or below these numbers. Use perceived exertion in conjunction with your calculations. Listen to your body.
 
© 2002 Desktop Fitness, Inc. All rights reserved.