Where do I exist?

In the lab?
In my bed?
My body?

But, where am *I?
Where do I exist?

How much of my body
could be cut away, separated, from me?

Would there be countless pieces of
flesh and organs,
scattered around one piece:
me?

Is that where I exist?
Is there a specific puzzle piece that,
if removed,
renders the puzzle nonexistent?

Or, rather, if any piece is removed,
altered, or shifted,
does my existence
end?

*Where do I exist?