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

### input:
Hello there, I am trying to find out how to tell the difference between a pulled muscle in the chest or heart problems symptoms. I go to the Gym 3 times a week and NEVER get breathless when training or after I do both cardio and muscular at least 3 times a week, Chest pecturol machine I lift 60k 36 times 3 reps or 12, lat pull the same, 10 min run, 5 min cycle, 500m row, 55kg leg curls up and down. I have recently had my blood pressure and pulse rate taken in the gym and in the docs coming in at blood pressure 128 in the gym and 127 in the docs, pulse rate 66 in the gym and 70 in the docs. I just need to know If after all the information given that the NON severe niggle I would call it that I am getting under my left breast plate and sometime near my nipples left side. I am a 30 year old male from the UK, 6ft, 95kg in weight.

### output:

Hi, The difference between a muscular source of chest pain and cardiac problem is that in a muscular chest pain, you can reproduce the pain while palpating the affected areas as well as when moving your left arm around, while the chest pain of cardiac origin is usually triggered by any form of exertion, associated with palpitations and difficulty if breathing, may be radiating to the arms, and is relieved by resting. If you have any of the above symptoms, I would suggest a consult with a doctor for work-up and advise. Hope I have answered your query. Let me know if I can assist you further. 