At what age did you become aware that you were alive? Do you remember?

I was 3, and I do remember certain aspects of it very well. It's like it just hit me one day and all I could do for a few minutes was to just stand there and look at stuff in the room. It was like I came from no where, and was just placed in a standing position in my Grandma's living room. It scared me and I think that's why I remember it so well.
At what age did you become aware that you were alive? Do you remember?
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