Does anyone else do this?

Does anyone else do this? Does anyone else do this? I have a habit of often covering my mouth with my hand when I talk. I don't even realize I'm doing it half the time. If I'm leaning on a table or desk it looks more natural because I can rest my face on my cupped hand. I think I just like to hide the way my mouth contorts/tenses up while I'm talking, but it probably makes me more muffled and hard to understand.