Answer:
When heart rate or rhythm changes are minor
Your heart rate or rhythm can change when you are under stress or having pain. Your heart may beat faster when you have an illness or a fever. Hard physical exercise usually increases your heart rate, which can sometimes cause changes in your heart rhythm.
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Answer:
in teens, its very common
Explanation:
Clerical work is usually one of the top ones due to the constant repetitive use of the hands with typing.
