Do you keep clothes on under scrubs?

I understand the question to be inquiring about the clothing practices of medical professionals, particularly when wearing scrubs. So, let me phrase it in a manner that simulates a curious questioner: "Excuse me, I've always been fascinated by the attire of medical professionals. When you put on your scrubs for work, do you keep any clothes on underneath, or do you wear them directly on your skin? Is there a specific reason for either practice? I'm genuinely curious about the practicality and comfort aspects of it all.