A resting heart rate of 120–140 bpm is significantly above the normal range and should be considered a medical concern. This level of resting heart rate is often associated with serious underlying conditions, such as arrhythmias, thyroid disorders, or acute stress responses. It places substantial strain on the cardiovascular system and increases the risk of heart-related complications if sustained over time. While it’s normal for heart rate to rise during exercise or emotional excitement, it should return to the 60–100 bpm range at rest. Persistent elevation into the 120+ bpm range at rest may require immediate evaluation by a healthcare provider to ensure proper diagnosis and treatment.