My heart goes really fast when I think of it going fast, like 150 to 190bpm. I was told that adrenaline and cortisol get released when you fear and the flight fight mode is being activated by the mind which in turn speeds up the heart. How come I fear my heart going fast then it does? I mean I didn t think I would have thought control over a heart. I can think or tell my heart to go 60 but it s not going to go and do what I say or think. So is this just a part of a panic attack? I have been checked out left and right including stress test(s), halter monitors, thyroid and adrenals were checked and I my doctor also checked just about every blood test available. If I am ok...then why all the fast heart beats? Thank you for your time. ~ Tommy