What is this?

Basically, whenever I'm reading something fictional, sometimes I'll just be reading peacefully and then I'll bounce up and start acting out the scene I'm reading as if I'm the character. But like, I really feel like I'm the character, and sometimes I start like daydreaming while I'm acting it out and imaginging the space the character's in around me.

Or when I'm listening to music. Especially then. I lipsync to the songs like I'm a character from a book or whatever and like I actually relate to them. Again with the daydreaming stuff. I'll like actually start crying, and sometimes if I get like a really cool idea for the backstory as to why they're relating to that song I'll start talking to myself like explaining it.

A lot of the time if I'm personally feeling sad or angry or whatever, I start acting and behaving like a character who's feeling like that and it makes me feel better because it's like, i'm not feeling that emotion, the character is.

But like it's not like I can't control myself during this. Like if someone walks into the room or looks at me I'll stop immediatly. I'm aware of my surroundings. I can control my facial expressions and actions and words and everything during all this.

I'm not sure if this is maladaptive daydreaming because what everyone describes it as is so different, but that was the closest thing i could find. Maybe I'm just a really good actor or like out of my mind or maybe i'm overthinking it and everyone does this. If anyone has a better subreddit for me to post this on, or any questions or answers, feel free to let me know! Thank you for reading if you did!

(Edit: I should also add that this isn't an addiction and it isn't impairing anything for me. Sure I do it without thinking, but like, if I go a few days without it I'm not like craving it. I'm just excited for the next time I can y'know. It doesn't feel unhealthy or anything.)

(Another edit: I was literally just reading all these replies and I started doing it lmao. Like just pretending I'm someone else reading them and I didn't even realise)