Habitary - Doing something so much that your brain forgets it's even do

Doing something so much that your brain forgets it's even doing it. Like your soul is on autopilot.

I grabbed my coffee and drank it without even looking at it. My brain was on vacation.

I sat on the couch and started watching TV before I even took my shoes off. I'm that lazy.

I opened my mouth and started talking before I even thought about it. My brain is faster than my mouth.