The telltale symptom of a rapid heartbeat is when your pulse rate is too high. Heart palpitations are also a strong factor. These palpitations feel like an irregular racing of your heartbeat, or a thumping or flopping feeling in the chest. When your heartbeat is too fast, you may also feel dizzy and may experience fainting. A normal resting heart rate is 60-100 beats per minute for adults. If your heart rate is consistently over 100 beats per minute, then it is considered a high heart rate or pulse rate.

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