Home » QAQuick Answer: Why Is My Heart Rate Over 100 At Rest?ContentsShould I be concerned if my heart rate is over 100?Is a resting heart rate of 105 bad?Why heart rate is high at rest?Is a resting heart rate of 100 bad?Should I be concerned if my heart rate is over 100?.Is a resting heart rate of 105 bad?Why heart rate is high at rest?Is a resting heart rate of 100 bad?