Breathing
The Pause You Don’t Notice: Riddle 4

You have it with you from the moment you’re born, but you never physically touch it. It stops when you sleep, but it’s not a dream—it’s simply unconscious. And you breathe naturally without thinking—until, one day, you don’t.

Btw your shadow is with you from birth but never physically touches you. It disappears before you sleep (since there’s no light to cast it), but it’s not a dream. You have a shadow without realizing—until you don't, like in total darkness.

You have it with you from the moment you’re born, but you never physically touch it. It stops when you sleep, but it’s not a dream—it’s simply unconscious. And you breathe naturally without thinking—until, one day, you don’t.
Thats a nice exp but hmm that fits too but what I wanted to hear was more apt

Btw your shadow is with you from birth but never physically touches you. It disappears before you sleep (since there’s no light to cast it), but it’s not a dream. You have a shadow without realizing—until you don't, like in total darkness.
Thatsn again nice exp but it doesn't exactly fit the riddle since it doesn't fully "stop" before sleep. It just depends on light. The answer I had in mind is something that actually stops when you sleep.
I’m with you from birth, yet you never touch me.
I leave before you sleep, but I’m not a dream.
You do me without knowing—until you don’t.
What am I?