From the article you posted:
snip -
When you die, your heart stops pumping blood, so blood stops moving around your body. Slowly, it begins to settle to the lowest parts. So if you die laying face-up in your bed, your blood will settle in your back, the back of your arms, the back of your legs, etc. If you hang yourself, the blood will settle in your feet (except for the blood that's trapped in your head by the rope you're hanging from). Then you can end up with an eggplant-colored face. (I know . . . say it together, class, "Ewwwwwwwwwwwwwww!")
A fixed lividity pattern is a wonderful way for a quick check on whether or not your body has been moved. For instance, let's say you died face-down in bed. The blood will settle where? Yes! In your tummy and the fronts of your legs and arms and your face! Again, we're talking about the possibility of an eggplant-face here. I know . . . get it out of your system. "Ewwwwwwwwwww!"
And let's say, you're lying there, (minding your own business) when someone finds you. They freak out. (People do that when they find dead people.) Then they call 911. Now you've been lying there, dead, for a while. You've got an eggplant-face, but the 911 dispatcher will often still tell the person to put you on a hard surface, (i.e., the floor) and turn you face-up to do CPR. (Important note: CPR doesn't work on people who have been dead so long they have an eggplant-face.)
