I have no professional insights, just empirical observations: Everyone of us who pulled an all nighter knows that you feel really good at some point in the mor

I have no professional insights, just empirical observations: Everyone of us who pulled an all nighter knows that you feel really good at some point in the morning. But also every one of us who ever was around a person with sleep deprivation knows that this other one was very likely grumpy and miserable for the rest of the day. As far as I understand it, the euphoria is induced by an increase in the dopamine levels, leading to an inhibition of the ACC. But for all I know depression is related to serotonin imbalance which would kick in as soon as the dopamine rush is gone. Again, I am no professional, just tell me if I am mistaken.