Is a heart rate above 200 beats per minute during exercise dangerous?

Exercising with a heart rate exceeding 200 beats per minute (bpm) may be dangerous, and the level of risk varies among individuals. Generally, a normal resting heart rate ranges between 60 and 100 bpm. During exercise, heart rate increases but typically does not exceed the maximum predicted heart rate (220 minus age). For most people, achieving a heart rate above 200 bpm during exercise is considered excessively high and may lead to hemodynamic disturbances, resulting in inadequate blood supply to vital organs and causing symptoms such as dizziness, visual darkening, cold sweats, and even potentially triggering serious complications like myocardial ischemia and arrhythmias. In particular, individuals who are not accustomed to regular exercise or who are older may face an increased cardiac workload from excessive heart rates during physical activity, which may lead to complications such as heart failure. Therefore, if an excessively high heart rate occurs during exercise, it is recommended to stop exercising immediately and seek medical evaluation to determine the cause and implement appropriate treatment measures.