What are the most common verbal and body language signs of stress?

I'm giving up Twitter and Reddit.

I've actually been off of both for a few days now. I was planning to take a week hiatus, but it's going well (I'm more focused), so I'll keep going through Lent.

I limit my ability to take fun breaks by blocking sites like Twitter and Reddit, or any site I'm spending a lot of time on. When I take a break I have nothing interesting or distracting to do, and soon I'm bored enough to start working again.