Have you ever known someone who lets you know audibly when they're not happy, even though they never say a word?

I’m trying to think of the best way to explain what I mean here, so please bear with me. I have had 2 friends close to me that seem to be unable to do a simple task, even getting in the shower, without emitting one of the following:

1. Sigh.
2. Heavy exhalation.
3. Somewhat muffled kind of “oof” sound;
4. The old standby, “arghhhh”; and my favorite,
5. I don’t even know how to describe it, but it kinda sounds like “harumph”, but with a “haoof”..

They both do this no matter what it is they’re doing, be it having to answer the phone, having to bend over to pick something up, or even going to work. It’s like they feel like the world is picking on them or something.

Am I nuts for even noticing this? BTW, both of these people are fairly unhappy in their lives.