How are you holding up?

[Alicelily]

Rachel: Hey!

Tag: Hey.

Rachel: How are you holding up?

Tag: Not bad.

=> I know "How are you holding up?" means " How are you doing?"
but can I use this expression normally? I mean, is this expression should
be used in special situation? (like when somedody is in depressed mood?)
Please,answer me~ ^^;

[Tdol]

It's mostly used when someone is ill, under pressure, in trouble, etc.

[Alicelily]

Thank you so much!!!!