Had a terrible panic attack last night and was curious how other peoples bodies react to anxiety. For me, my heart was beating out of my chest for like 20 minutes, completely convinced myself I was having a heart attack and I was going to die or something. Palms sweating so bad, had to lay naked on my bed with my fan blaring to try to cool down even tho my room is freezing. I then managed to get myself to the bathroom to splash cold water on my face. I was shaking profusely and felt the blood drain from my face and almost fainted before making it back to my bed. 
Does anyone else almost faint when having these attacks? Its so so so scary to me.