What is the most primal change that happens when waking state comes?

What changes when we wake up? How do you know that you're awake now? Let's leave our changes when we wake up. Is it purely perception? No. So what is that, which is independent of perception, which shows you that you're awake? I am. Yes, what is that I am? It's I, but I cannot refer to it as something. Slowly. So that I. Is there even in sleep state? The eyes there in sleep state, you notice the change from sleep to waking. What is the most primal change that you notice that you could say, ah, even if the world is not there? This is there and therefore I noticed that I'm awake and not asleep. The eyes unchanging throughout states sleep or waking. It doesn't matter. So what is the primal change that happens that we can call waking state came or wakefulness came? How are you awake now?