I tend to get vertigo just from walking up a flight of stairs... soo... heights don't work very well for me.
It seems that the further away from the ground I am, the more faint I am. I'm not so sure it's a phobia as much as it is to do with my um... internal workings.
I used to be able to go on roller coasters all day long without feeling sick or faint at all but then I hit puberty and developed a blood disease that makes me prone to anemia. After that, I have to take breaks in between rides and every so often I get physically sick and have to vomit once I get off the ride.
That never used to happen to me before.
I enjoy being on thrill rides because it's a controlled fear.
I don't like airplanes; I don't like climbing ladders and I don't like standing near a window or on a balcony in a high-up apartment.
I'm scared of lots of stuff.
When you're getting paid to deal with heights though, you tend to force yourself to get over it in that moment that you're working - do your job and get the hell back down to the ground again.
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oh, and those rides in Vegas look severely tame. They are just kiddie rides ontop of a tall building... which I guess, is the whole appeal to them. They look pretty lame to me though.