What Is Deep Sleep?

There is no sense of joy or bliss upon waking up. And like what happens with sleep, it's not even an experience. What can that be? So these are some fault lines. Can we take a question from the a internet? Audienc, yes, y. We've had actually a few um questions regarding deep sleep and am let's tage tut those things. Could this absence of any kind of experience be the reason the buddhists call it the void instead of chit and ananda in vidanta? Deares for a very subtle question. Thank you.