Can a person have heart attack and not know it?

Yes, especially in people who ignore subtle fatigue or breathlessness. I've seen guys in my gym push through weird chest tightness thinking it is just a heavy workout fatigue. Watch your clean diet, do your cardio, but always listen to your body and don't ignore sudden sweating.

I literally went through this three months ago. I had mild jaw pain and felt extremely tired, which I thought was just work stress, but a quick ECG at the hospital showed a block. Please don't take sudden, unexplained body discomfort lightly; get checked immediately.

Haan beta, hamare gaon mein bhi ek chacha ko bas thodi ghabrahat aur paseena ho raha tha, unhone socha garmi hai. Baad mein bade sheher ke doctor ne bataya ki unhe dil ka daura pada tha. Bhagwan ka shukr hai unki jaan bach gayi, aap bhi dhyan rakho.

Please don't panic reading scary things online, but yes, silent heart attacks are real. If you or anyone in the family has diabetes, the classic chest pain might not even happen, just sudden extreme fatigue or breathlessness. Keep regular checkups and go straight to a doctor if you feel off.