I haven't tried being on the side that was asked (because I can hide things too well) but recently I asked a friend if he was okay. For a normally cheery person, he was being pretty grave, so I asked him. Surprisingly he said no, then we talked about it a little bit. He became much lighter after that (in demeanor).

Hiding too much of your emotions can lead to a pile up inside, and one day, it can lead to sudden overflow of it, which can be painful (or downright deadly).

Thanks for the reminders!(°◡°♡).:｡