What the Body Knows Before the App Does

There's a field of research built around something called interoception, the brain's ability to read signals from inside the body, heartbeat, breath, tension, before any of it becomes a conscious thought. People with a stronger connection to those internal signals tend to regulate emotion more effectively, not because they think their way there, but because they feel the shift arriving first.
There is a small, steady voice that lives in the margins of my day. It is not loud, it does not arrive with a notification.
It usually knows something is off long before I've named what. A tightness before an argument I hadn't seen coming.
A heaviness before a tiredness the sleep tracker still insists I don't have. The app catches up eventually, usually a full day behind whatever my body already registered.
I've started listening to that voice earlier instead of waiting for the data to confirm it. Not instead of the data.
Before it, the way the research suggests the body actually works. I'm trying to build the habit of checking in with that voice before I check the screen, on the theory that the original signal is probably still more accurate than whatever caught up to it later.
The gap between the two keeps shrinking the more I actually practise listening for it, which suggests the voice was never really the quiet one. I'd just stopped checking in on time.
The app is a useful second opinion. It was never going to be the first one.
I'm done treating it as though it should be.