Do you fidget?

Do you fidget?

I'm just now becoming aware of how often I'm fidgeting. I move things on my desk. I change position in my chair while waiting for a web page to load. I think about getting a snack. I pick at a hangnail and then find myself picking at it again a few minutes later. I get a glass of water, then it's a trip to the bathroom, maybe the dogs need out. I get back to work and instead of concentrating, I'm fidgeting again. My fingers seem to be always in motion, even when I'm doing something like reading. It's like they have a mind of their own. Why is this? Why can I not just be still?