I mean like: How long does it take before you brain goes: oh shit, I exist... I remember, I am a living thing, human, my name is [■■■ ■■■] and my current location is [■■■] and oh shit I'm late for [work/school/event] (or if its weekend, its like: oh... nothing's happening, life is boring)
Like you know what I'm saying, like the Terminator HUD thing after it reboots and it takes a few seconds before it can identify a target and then recognize its mission... that type of thing.
Or do you wake up and within 1 nanosecond realize the state of your existence?
if I choose to actually get up when I wake up naturally at the right point in the sleep cycle but it's 17 minutes before I want to wake up, I'm sure awake in a second or two
if I choose to ignore that and go back to sleep for 23 minutes, then it takes a few minutes to fully wake up nowadays
if my dog is standing on my chest making a hoarking sound, I'm out of bed on my way out the bedroom door yelling at her to follow me before the other one even gets up