So here's a fun question that's kind a simple at face value, but gets a little more tricky as you dig into it.
What are you, exactly?
If you cut off an arm or a leg, you are still you.
If you could cut off everything from the stomach down and your arms, nose and ears, you would still be you, right? If so, then you are not these parts.
If with the aid of advanced life support equipment, you could cut off everything from the neck down and still live, you would still be you, right? There would be no loss of self...
And if someone else could have their head attached to your now headless body, they would still be themselves.. they would not be you. Right?