I was sitting down when I was short of breath, I felt my heart beating fast, I felt warm like how you are when you have a fever, I felt like I had mental fog, a bit sluggish and off balance, I felt a cold sweat start to form on my forehead, and I felt like I was in a dazed state, I drink soda about 6 cans a day, I had two cigarettes today as well, I have minor asthma too, my room has dust and a bit of mold in it. I don t want exercise, I m about 300 lbs. I know there are a lot of factors but I don t know what is causing this, this is the second time this is happening, I think it might be the sugar.