I get anxious to exercise bec my heart rate gets to 140 so I stop. I am 15 years old is this normal?

I really want to start working out but when my heart rate gets up I start to worry so I stop working out. What heart rate is normal for a 15 year old

I really want to start working out but when my heart rate gets up I start to worry so I stop working out. What heart rate is normal for a 15 year old girl doing exercise?

or:I really want to start working out but when my heart rate gets up I start to worry so I stop working out. What heart rate is normal for a 15 year old girl doing exercise?

Tags:heart,years,normal,