The brain is a piece of soggy bacon that lives in a shell of bone, has its own membrane that is like the gut lining, cleans itself by power-washing itself (and shorting itself out, essentially; REM sleep is basically the side effect of this process), depends on glucose for its special mitochondria[1], and your humanity is literally a thin layer of meat-paint on top of millions of years of evolution...
... that is doing scientific research on itself, and then reading it and understanding the strange symbols on the screen.
[1]: All your organs have unique metabolic signatures, but they, generally, can all run on purely fatty acids; the brain requires about 30-40g of dietary glucose to run optimally, as fatty acids do not cross the BBB quickly enough.