<s>[INST] minor discomfort in middle of the chest that last about 20 seconds then goes away. Feel fine otherwise..then coms back and goes away again. Been going on all day, is that heartburn? I m a 52 yo male..work out regularly..6 3..310 pds..no heart problems in family [/INST] Thanks for your question on Chat Doctor. In my opinion it seems HERD (Castro Esophageal Reflux Disease) mostly. But since your age is 50, we need to rule out cardiac cause first. So get done ECG to rule out cardiac cause. If this is normal than no need to worry much. You are having HERD only. It is due to laxity of gastroesophageal sphincter. Because of this the acid of the stomach tends to come up in the esophagus and cause the symptoms. Try to follow these steps for better symptomatic relief. 1. Avoid hot and spicy food. 2. Avoid large meals, instead take frequent small meals. 3. Avoid stress and anxiety. 4. Start proton pump inhibitor. 5. Go for walk after meals. 6. Keep 2 - 3 pillows under head in the bed. 7. Avoid smoking and alcohol if you have this habit. 8. Lose weight if you are obese. </s>