<s>[INST] Hi, I feel sharp pain for about a couple of minutes in the left side of my chest right after smoking. I am 30 years old and 85 kg weigh. what kind of tests should i have done in order to know the performance of my heart. and is there any test that predict the probability of heart attack smoking related disease? [/INST] Hi Thrive read your query and understanding your concern. See, in young age It's unlikely to have heart disease until unless you smoke heavily, or you have very strong cardiac family history. Pain right after smoking doesn't indicate to have heart disease, but you can see a physician who can prescribe some routine test like your cholesterol level, hectogram, ECG and Echocardiography to check your heart function. To avoid Heart disease you should avoid smoking. Because the more you smoke, the more calcium deposits in arteries and can be reason for heart attack. Hopefully I answered all your queries Good Luck </s>