, walking, to running, the faster the
HR is, should be. A young person in good physical condition may see a
HR well over 150 when exercising.
The rule of thumb is the resting (really resting, not all emotionally excited or any thing more than sitting for the last 15 minutes) should be below 100, something around 60 would be much better in my mind.
Talk with your parents/guardians if you believe you are not well.