I had a blood test last year, and they had to take several "Lots" in one go (for several tests, which all came back negative btw) ... WHAM.... my body reacted to the lowering of my blood pressure by making me almost sick, dizzy, sweat profusley, and had to lie down. I felt so silly! I`m quite a big guy, and its just a small amount of blood, but my body decided I really wanted to lie down to keep the blood pressure to my brain at the healthy level.
You just have to admire how our bodies work... and curse them when they do dumb stuff
