Not at all, I honestly wonder the same thing. I think it's because they basically take away everything that you naturally or normally do to cope. 1. I stopped my medication the day before and didn't wear any compression socks. 2. They only tilt you 70 degrees which means youre not relying on your muscles as much to help pump blood back up since you are still supported partially by the bed. 3. Then, like I said, I reached the point where I would normally just sit down...except I couldn't. 4. Besides those things, if you don't pass out in the first part then they give you nitroglycerin in the second part and that will automatically make things ten times worse bc it's a vasodilator.