I felt a vibration on my wrist this afternoon and went to check it. My wrist was bare. I'd left the watch on the charger two rooms over. I stood there for a moment, wrist slightly raised, nowhere to look. The sensation had been completely real. Not an itch, not a twitch - the specific brief mechanical pulse of a notification. I must have felt it a hundred times that day on days when the watch was there, and now the body just generates it on its own.

I noticed this more later in the evening. A buzz in my jacket pocket where the phone wasn't. A feeling of something arriving that nothing had sent. My body is running old patterns now without the original input. It learned the frequency so well that it started producing it internally. I'm not alarmed by this, just a little unsettled by how thorough the learning was. What has your body learned to feel that isn't always actually there? What physical habit has the digital life written into you?