When I find myself alone after socializing it's like I can breathe again yet am also tired. I've always found it strange that I have this "breathe again" sense - having it sort of implies to me that what I was doing was stressful and tense, yet I certainly don't feel that way around people.
I can relate to this extremely well. It's like as soon as I'm alone and know that I'm going to go unbothered if I want to be, I literally heave a sigh of relief. It's a good feeling, I think! Part of me wonders how much of this is just part of the human experience, but it goes undiscussed enough that neither of us have realized it before?
Either way, your comment is really resonating right now. I like people a lot, but my nature is to isolate.