Is it just me?

I've noticed lately that I tend to act out my character's facial expressions while writing. So if I'm writing 'so and so smiled', I smile while I'm writing it, or if they're saying something clever, I look clever, or if they're angry I furrow my brow. I found myself typing about someone biting their lip while biting my lip.

I'm not sure if it's the actor in me, or the fact that I'm very visual, so maybe I feel I can see what I'm writing and doing the sympathetic mimicry we all do when having conversations. As though I'm talking to the characters.

Or maybe I'm just weird.