Hi, my boyfriend is 23 years old , Three years ago he felt his heart was beating fast and therefore went to the doctors the next day, they said that your heart beat does seem slightly higher and thus we will refer you to a cardiologist, he went and got a EKG,ECG and a test involving injecting glucose . The glucose did decrease the heart rate... After the results came the cardiologist it is normal and you may have felt palpitations or heart mumurs which are not harmfull and very common. They made him into a outpatient and got holter examination which came normal aswell. The cardiologist examined this and said it is normal and there is nothing to worry about. At sleep the heart rate dropped to 50-60bpm and highest during the day went to 120bpm. The cardiologist said his heart beat is just faster naturally! Is this possible? Last week he went for a regular check up and they said his heart rate at the gp was 98bpm, however reading online that being on the upper end of the norm of 60-100 is dangerous. My boyfriend also used to go gym and dance classes for a whole year and did not have any symptoms. I feel worried can you please tell me why his heart rate is high generally. Thank you