It is good to go out on Monday nights, to relieve you of the stress.
It is especially good to go out with your cousins, whom you've not seen for the longest time.
It is very good to eat at a nice and fancy restaurant and laugh to your heart's content.

It is however not good to do this in the middle of summer. It gets sticky.
It is also not good to finish a whole liter of a vodka cocktail. But it was very yummy.
It was good at the time, but not good to stay up until 1 am. The moment will end, inevitably.

It is good to still be able to wake up the next day in time for work.
It is not good to be zombified the entire day.

Not good. Today was not good.
But last night? It was a blast.