Why are we using the phrase “sleep on it”? It’s commonly used when we’re dealing with important decisions – the kind of problems that can be solved with creativity, not brute force.
It’s not about the hours we work, rather than the output of those hours. One could accomplish less with more. Sleep makes our productive hours more efficient.
The lack of sleep makes us annoying to be around and unfocused. We’re depriving ourselves of the creativity boost during the day by ignoring rest, particularly from REM sleep that happens mostly in the early morning hours.
So, sleep on it.