The way I see it, it doesn't really. It is even one reason why we sleep: to become someone else as we awake. ....
Yes. I agree, just as I aspire to wake up as Sunshine. Alas.
(Joking)
Mostly because your brain lacks the neural learning that would sustain such a role, I think.
Yeah. Probably, neural networking begins the morning by telling us beneath our conscious mind "Dude you are Atanu". They control all processes and the intellect too. And it must be true for all.