I know people will laugh at what I have to say, but it's a source of panic for me and I haven't read about a lot of other people with these same thoughts. It's similar to fear of death and having a heart attack (which I don't experience), but it's more external to my body. I literally feel like I'm going to float away when I'm outside and in large rooms (basically anything higher than an 8 foot ceiling). I feel like gravity is going to let go of me at any time. In fact, just thinking about it as I'm sitting on the couch writing this, I can almost generate a panic attack if I don't work to distract myself and think of something else. I have flashbacks to a Big Bang Theory episode where one of the characters unknowingly eats a marijuana cookie, and freaks out that the earth is moving too fast. He quickly comes out of it if you've ever seen the episode, but that scene can cause me a panic attack now because of this feeling of floating away. I can relate to someone feeling like they're going to have a heart attack and die, so I'm wondering for one, if anyone has such a crazy thought as what I have, and even if not, how do you cope with similar fears of dying by legitimate means like a heart attack. I honestly don't know what's worse -- fear of something ridiculous (when has anyone ever defeated gravity in history?) or fear of an actual event like a heart attack. Luckily for me, I never experience chest pain or anything that could indicate a heart attack, but I know there have to be others that do. Maybe it's a similar fear, mine is just not based in any sort of reality at all. That actually makes it harder to combat in a way.