Why do I have heart palpitations sometimes?

Breathing. heart palpitations could be due to hyperventilation. be observant of your breathing habits. keep your lips closed during the day at all times unless speaking and eating. try not to sigh, chew gum. cough and sneeze with your lips together. at night use paper medical tape to keep the lips together. restoring the carbon dioxide reserve levels will calm smooth muscle and can regulate the heart rate.