Rapid Heartbeat
High stress can also cause a rapid pulse and an elevated heart rate. One research compared heart rate reactivity to stressful and non-stressful events and discovered that heart rate was considerably greater under stressful settings. Another research of 133 teens discovered that performing a demanding activity increased heart rate.
A similar study indicated that exposing 87 students to a stressful activity increased heart rate and blood pressure. Surprisingly, playing soothing music during the work helped to avoid these alterations. High blood pressure, thyroid illness, certain cardiac problems, and excessive consumption of caffeinated or alcoholic beverages can all produce a fast pulse.