Why are you still awake at this time, and what are you doing?

I raised an eyebrow at him and said, "Hello? I should be questioning you, what are you doing outside at this time and why are you still awake at this time."

She is now dressed, indicating that she actually went somewhere significant. I instantly felt interested, and I really wanted to ask him anything, but my tongue just wouldn't budge.

I'm merely breathing fresh air outside.

I hope if you offer an excuse it will be persuasive if I remark, "Wow! It's so cold then you walk out to get some air. Isn't it cold enough in...