### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Good afternoon.  I am a female who will be 31 in July, I am not on any medication at. I weigh approx 13st 11 and try to exercise for 2-3hours weekly (running, badminton & tennis).  For about 6months I have experienced missed heart beats with a sudden strong heart beat, which makes me breathe in deeper and feel a little light headed at times. I can feel this in my chest. I have a pulse of 71 - 80 BPM with a missed heart beat about 4-6 times per minute at rest and a pulse of 146-152 BPM with a missed heart beat of 8-14 times after an hour of tennis.  I only have coffee in a morning (1 - 2 cups), I eat regular fruit and vegetables, I take vitamin suppliments and have take aways probably once a month. I dont like salt so try not to eat processed foods and never add salt to my food/cooking. Most of the foods we eat consist of pasta, bread & rice (all carbs!!) but include fish, veg, red meat & white meat There is no apparent reason for the missed beats, they are all the time, in bed, watching tv, at work, in the bath, driving, walking, excercising etc. It is frustrating and a little worrying to say the least Is this normal or should I see my GP? thank youNicola Lee

### output:

Dear Nicola Lee, From your description it seems you have extrasystolies, it is a specific type of arrhythmia, when heart contracts prematurely from time to time. It can observe in young people without any pathology. If the amount of extrasystolies us less than 1000 a day, then nothing to worry. If it is more than 8000 a day, there is a need for treatment. Between 1000-8000 is a gray zone, and if there is a need for treatment, decided individually. I would advise you to see your doctor to perform a holder monitoring, which is a test, when you wear a small device, which registers 24 hour ECG, so the amount of extrasystolies will be known for a day. Take fearsome back if you have any further questions