Heart rate 140 beats per minute. Is that normal?

Under normal

circumstances, people's quiet heart rate is generally 60-100 beats/min, heart rate of 140 beats/min means that the number of heart beats per minute is 140 times, may cause the heart to overload, not conducive to myocardial health. After exercise, people's body oxygen consumption may increase, the heart needs to output more blood, resulting in faster heartbeat. After drinking strong tea or coffee, it may lead to increased excitation of sympathetic nerves, further causing their heart rate to accelerate, up to 140 beats/min.