The term “palpitation” refers to the abnormal or erratic beating of the heart. Palpitation is frequently described as a symptom of skipped beats, a pounding in the neck or chest, or a rapid racing heartbeat. Although palpitations are not frequently a sign of any major medical conditions, they can occasionally be caused by serious conditions such anemia, thyroid issues, or arrhythmias. Your heart may beat more quickly in various situations due to things like the thrill of falling in love, being startled or frightened, stress, a cold allergy, medications, herbal supplements, coffee, and alcohol.

Although for some people, dehydration (loss of water) or a lack of regular activity are the only two main causes of the palpitations they experience.....

https://healthwatchline.com/2023/06/27/natural-ways-to-get-fast-relief-from-heart-palpitation/