Heart rate around 128. What does that mean?

A heart rate of about 128 beats/min means that the heartbeat is accelerated, which may be related to physiological or pathological factors.

Under normal circumstances, the normal heart rate range is 60-100 beats/min, and a heart rate of 128 beats/min usually indicates that the heartbeat is accelerated. This situation may be caused by physiological factors, such as strenuous exercise, excessive tension, excessive anxiety, etc.