Opening the Donguibogam library...
Opening the Donguibogam library...
Opening the symptom encyclopedia...

Have you ever felt a sudden tight, squeezing sensation in your chest, leaving you breathless and heavy while exercising? If you brushed it off thinking it was simple muscle pain or momentary overexertion, please pause for a moment. It might be an important warning sign from your body.

Have you ever suddenly felt your chest grow stiff and tight, making it hard to breathe on your subway ride home from work or late at night while working overtime? That frightening moment when the center of your chest feels completely blocked and constricted, making your heart sink as you wonder if something terrible is happening, is an experience many share. Are these symptoms simply because you are tired?