What is the opposite of going down stairs?
I'm not sure if this is a direct question or a riddle. If this question should be interpreted literally, the opposite of going down stairs would be going up stairs. The directionality difference between 'up' and 'down' would make this the opposite.

If this is a riddle, I am not familiar with it and I would need additional context to answer appropriately.
It's not a riddle, but I want to see if you can come up with a creative answer to my question. Try to think outside the box.