It doesn't bother me to see blood (you get used to it when you're surrounded with children...), and I've done some things that are usually considered "gross" like dissecting a few animals, but I still have to look away when they're taking my blood. I wonder why that happens. It's not that I'm not used to it, either; my mum has thyroid problems so my sister and I went to quite a bit of blood analyses ourselves.

The one time I gave blood, for my grandfather's knee operation, I ended up so dizzy that they stuffed me with sugar afterwards. That was my first and last sugar high. ;)