I find it extremely difficult to articulate what I mean. I've gotten this feeling throughout my entire life, even when I was a child, and I'm sure there must be many others who've experienced it; I just can't find any mention of it online.
I'll give you an example. Sometimes you might be going from place to place, doing your own thing. When you're done with whatever you were doing, you just... stop ... and take in your surroundings. Suddenly the quietness around you seems to give you a tingling, comforting feeling that's quite honestly a beautiful feeling.
I'm 22, and I've been getting this throughout my entire life; and heck, I even get it when playing videogames (particularly open-world games), if they're immersive enough. The most common place I get this feeling in the real world is when I've been travelling in a car for a while (I don't drive currently, usually it's my mother driving me), and we reach our destination: The car stops; the engine turns off; the music on the radio goes silent, and I'm in no rush to hop out. For some reason this feeling rushes over me; it feels similar to butterflies and goes through my upper legs and stomach; even in my upper arms for some reason, but is all very comforting.
My earliest memory with it (although I know I had it years prior to this), was one day when I was 7-9 yrs old. I remember it quite vividly, actually. I don't remember where I had come from (probably school or something), but my Mum had been driving me for what felt like quite a while. She pulled into our front driveway and stopped. The engine shut off; the radio went silent. It felt calming, and I didn't get out of the car because I was just appreciating and enjoying the feeling of sitting in the quietness, with the subtle ticking sound coming from the cars engine you tend to hear when turning it off, just outside. My Mum said to me, something along the lines of "Why aren't you hopping out, Liam?". I don't remember what I said in response, but I definitely had no idea how to explain the reason to her; I find it difficult to even explain now as a young adult.
Now, I've managed to learn where and when to just "stop", and have this feeling come over me, like second-nature, but I still find that I can't well explain when or how it happens with words; that's why this post is so long.
As I said earlier, I also sometimes get this feeling when playing videogames. One of my favourite games of all time is The Legend of Zelda: Breath of the Wild (The sequel, too). It's an open-world game where you can travel to almost every single nook and cranny of the land of Hyrule, on foot or by horse. One of the things I absolutely love the most, is just walking around the world, exploring, and taking it all in. I don't care about defeating every single monster in every single enemy campsite across the world, or getting from place to place in the shortest time possible, or finding the most powerful loot or weapons; I just like to immerse myself in the world, like I'm actually there. And that feeling I described: I get it around almost every single corner, especially in out-of-the-way places like the top-edges of cliff-faces, where people in Hyrule never visit. In fact, I can give you an example: I was watching IGN's video of the game from 2016 when it was still in development (video link is timestamped to where I want to show you), and because I had been watching this gameplay video for the past 20 minutes, I was very immersed and relaxed in the game world. As soon as the player climbed up to this rock that was protruding out of the cliff-face, he immediately turned around to stop and take a look at the view in the distance, due to being so high up. I immediately, immersed, had that feeling come over me again, and it felt so nice; as it always does.
Is there name for this? If so, what is this called? There has to be some kind of psychology behind all of this.
If I understand what you mean, I might have experienced something like it. I think I noticed it more when I was a kid, especially while sitting in my desk at school when I'm done with work, any time I could daydream a bit. It's a nice connected feeling to my surroundings, almost feeling like the world is alive but not really.
That's how I interpret this poem When Traveling I Used to See - someone who felt this kind of feeling and experiences/daydreams it as girls watching him. I take it like anthropomorphized version of the feeling you describe.
I suppose it's some kind of mild meditative state, and probably also related to your body being relaxed in general.
Or, alternate theory, maybe you're just animalmaxxing. I mean, you ever look at a goat or something and think how they're so content to just stand there and do fucking nothing for hours? Maybe it feels really damn good to do that for goats. Humans are animals too, maybe you just got to that part of the brain.
Actually, now that you mentioned it, your experience does remind me of one that I used to get on rare occasions as a kid, but it felt different to this one and was separate. It was kind of like a sudden full-awareness state of mind of my surroundings, I can't remember much of how it felt, but it was a positive feeling. I don't think I've really felt it since I was at least 14 though, and I was quite recently wondering about it and why that might be, because I have another memory from when I was about 9-11 with this "other" feeling that's similar but different to the one I originally mentioned; and seems to be the feeling that you experienced: I was walking by myself out of an outdoor car parking area of a shopping centre. It was out the back area of the car park, where there are usually very little cars. I suddenly had this feeling you seem to be talking about come over me, and I was actually thinking to myself, "I'm here... right now!"... I didn't understand the significance of what "being here" meant, but those were just the only words that could come to my mind when I felt it. It was kind of like for a brief moment, I was... no longer mentally a child; I was fully aware of the young stage of my life that I was in, and fully aware that I was standing out in the open air of the world all by myself (mind you, at that age it wasn't common for me to be alone). As soon as I continued on my way, I forgot about the feeling and mental-state, and life just continued on as a normal, ignorant child, unaware of the beautiful complexity of the world we live in.
I've never heard of animalmaxxing before and can't find a definition; but I'm assuming it's the thing that animals do that you're referring to? You could possibly be right about this all being related to that, as mammals. If I am somehow "animalmaxxing" (that sounds weird to say about myself ๐), I certainly can't do it for as long as animals do; sitting around all day like goats and cows doing practically nothing.
To be honest, the animalmaxxing theory was just to amuse myself, it's not a real thing as far as I know. But you ever look at a cat just staring at a wall and think, how is the cat not bored?! It must be because it feels good