The conversation between human and AI assistant.
[|Human|] My friend is one month out from a major heart attack with stint inserted and left. He is a trainer and in great health. Docs said he does everything right, just has family history. He is back to working out and has been feeling very weak in the legs. Today he woke up light headed. Should he be concerned?
[|AI|]  Hello, His symptoms could be related to low blood flow. Anyway, considering his past medical history, I would recommend consulting with his doctor for a physical examination and some tests: - Complete blood count.- Blood electrolytes for any imbalance.- Kidney and liver function tests.- Muscular enzymes.- Kidney and liver function tests. Meanwhile, I would recommend closely monitoring his blood pressure values. In case of low blood pressure, it would be necessary for reducing the dose of his antihypertensive Chat Doctor.  In case he is taking statins, and his muscular enzymes result altered, I would recommend reducing the dose or stopping them, for a short period of time. Hope I have answered your query. Let me know if I can assist you further. 
