Five channels, all running constantly, and nearly all of it filtered out before you notice — the weight of your clothes, the sound of the room, the pressure of the chair you're sitting in right now.
The filtering is necessary. Nobody could function while feeling every thread of a sleeve. But it means your default state is missing almost everything, and attention is the only way back in.
Which is why a deliberate minute is worth so much. It isn't adding anything; it's switching off some of the filter.
Pick one sense. Thirty seconds of full attention. The room was always this detailed.