It's because most of the blood return to your heart is passive. The heart pumps OUT through the arteries pretty hard, but the blood finds it's way back through the veins whenever it feels like it, it just can only go one way because the veins have valves along the way that prevent backflow. A lot of the pressure that actually gets the blood back comes from the contraction of the nearby muscles squeezing the blood up past the valves. So especially if you're standing with your legs all the way down there from your heart, most of the work to get the blood back up is going to come from your calves and thighs flexing.
My A&P teacher very cheerfully illustrated the point by telling us there's actually one animal that does have valves in it's arteries.
We had a guy at one of my old jobs who was trying to get a not guilty by reason of insanity charge because he was facing a life sentence for something he didn't want to spend that time in prison for (the only time it's worth it). Unlike most guys however, instead of faking, he actually drove himself insane! He was actually fine coming in, just had some (dubious) suicidal ideation but perfectly cognitively intact. But the doctor wasn't buying the suicidal thing after a week or two so he started staying awake for weeks on end then slept for weeks on end, soiled himself constantly, refused to eat then binge ate. Just went absolutely feral until he really was.
One of the things he did for a while was refused to lie down at all. Just stood completely still in the hallway staring at the wall. Did it for weeks. Started to look like a candle melting down into his feet until they began to split open and weep interstitial fluid. Anyway the point is we started having to chase him around the unit a little. You'd go just stand next to him and bug him a bit until you got him to walk a little because we needed to start stimulating some blood return. I forget how that story ended he may have still been there when I finally had it with that place and left.
pretty much, yeah. there's not much else to say! I didn't stay at that job long but it was less to do with that in particular and more it was ultimately just because it wasn't meant to be.
ok final story; I have to get some sleep at some point.
my very first healthcare job was as a phlebotomist going around room to room in the hospital collecting blood samples. So possibly one of the few jobs on their feet as much or even more than the nurses. But I didn't really understand how hospitals were laid out yet so I had just been trying to keep my eyes out for a water fountain and just couldn't seem to find one. So I got a little dizzy but figured we'd go for lunch or something soon so I'd just push through.
Finally I was starting to get real dizzy though so I went and asked a nurse for some water and she was like "oh, you mean the nutrition room!" and pointed it out in the nurses station. So I turned and looked where she was pointing, then looked back, and the world narrowed into a pinpoint and disappeared. I vaguely and briefly remember walking on a beach and talking to someone at this point, but I don't remember who it was or what was said.
Then I woke up sitting in a rolly chair with like ten people around me and I couldn't move my mouth because my lips were completely numb. Somebody took my blood sugar and it was fine, but also I got really nauseous suddenly and I wanted to warn them but I couldn't speak. But then I gagged a little and there was an eme-bag under my face SO fast.
Anyway at that point a stretcher showed up and some lady introduced herself to me as the intensivist and they started wheeling me down to the ER and the only word I was finally able to get out was nooooooooo and she was like "oh yes honey, we're definitely going to the ER." And then my supervisor (my brand new supervisor, this was my FIRST. DAY.) came down while I was still puking everywhere and helped clean my puke off me.
I forget where exactly the dosage calculation got screwed up but it was also one of those things where I wasn't feeling it yet so I took more and when it finally kicked in I was fucked. I felt my blood pressure drop (and verified it actually, my anxiety med is also a blood pressure med after all) and wound up calling an ambulance. It turned out I didn't need the ambulance for the blood pressure but just because I probably would have aspirated my puke.
I remember thinking every single thought possible and them branching out infinitely from each individual one of those and also thinking the opposite of them all at the same time. I was convinced I was somehow aware that I was having a seizure (which like, isn't a thing). I remember feeling like that bit in 2001 A Space Odyssey where he goes through the monolith like I was being dragged across the universe by a rope around my neck. Then I got thrown into whatever that thing bender was talking to was in the Godfellas episode of futurama.
Then I woke up in the ER having been propped up over the siderail of a stretcher over a bucket full of puke with IV fluids running. 2/5 stars. I'd give it less but I'm pretty sure I met god and I'd hate to be rude. It was a lot less nice than the time I passed out on my first day of work, although I don't remember much of the unconscious period of that one either.
I bought a bunch of Celsius energy drinks in various flavors when they first came out and brought them home on the way to a party, thinking I'd store them in the fridge there and drink them the next morning. The party started, and I got tipsy, forgetting they were caffeinated. So I mixed them up with seltzers, drank all of them, and had a lot of alcohol. It felt great while the alcohol was still effective because they complemented each other.
I had a relaxed energy for a while, but then I got a strange urge to walk home at 2 a.m. I left without telling anyone and walked halfway across the city. No one bothered me, but I probably looked like an insane tweaker (which I basically was).
When I got home I curled up in bed, but I wasn't sleepy. My husband called me, asking where I'd been, which was fair. I told him I'd walked home, which he surprisingly took in stride (we both have pretty significant mental illnesses so we're somewhat used to each other doing odd shit sometimes). But then he asked about the energy drinks, and I said I didn't know what he was talking about. Then I checked my pulse, and it hit me.
I looked up the LD50 value for caffeine, which was like 10 times more than I'd consumed, plus I take propranolol as-needed for anxiety so I just took some of that too and was more or less ok. But the next six hours were spent in bed under a fan, tossing the blanket on and off, and occasionally running to the bathroom to shit straight liquid.
It was almost as bad as the time I took 300mg of THC as a first-time user who'd never even smoked before.️
Since I've had my IUD it's super sporadic and sometimes I kinda forget and then last week I wasn't even up trying to pass meds or lift patients or anything I was literally just sitting suicide watch and just doubled over in the chair wondering if I was about to involuntarily expel my IUD, the world's biggest shart, or both simultaneously. I wound up begging a coworker for a break and finding a bathroom off the unit to destroy.
A marriage is a mutual responsibility of the people in it and no one else. Only those two people are even capable of upholding the promises they made to each other. If one or both of them failed to do so that is on them. And again, if they failed to help you understand that it is not your fault, that means that in addition to not being able to keep their own damn promises, they also failed to raise you properly.
Probably not, it depends on what you did. I can (almost) guarantee it was one of two situations though:
it wasn't actually that bad.
If it was bad enough that you did manage to actually grievously harm or even kill someone, you were almost definitely put in a situation / given access to something no sane adult should or would have ever allowed a 6 year old child to have access to (such as a gun, or being in a position to knock someone off a cliff). It is the responsibility of adults to make sure that 6 year old children are unable to harm other people while they are still learning that their actions have consequences.
As for your current everyday life, I need you to understand that an inferiority / guilt complex is in itself a burden on everyone around you. I once dated a guy with a similar guilt complex and he was impossible to deal with because I kept having to constantly shore up his self esteem for him.
If you really want to do something that benefits other people, start by working on yourself and your self esteem. You may be able to try self-help books, videos, personal mantras, etc, but if you're not making any headway with those you likely need professional therapy. You are no good to anyone (and even a bit of a drag), if you continue on with this mindset.
Oh, and it's also the responsibility of adults to raise children who don't think or act like this. If the people who raised you have even subtly hinted to you that this is your fault in some way, they're only doing it to avoid having to take responsibility for failing to prevent a six-year old child from causing irreparable harm to something. That means they failed twice, and they did both as adults.
You're still stuck fixing it though, not because you deserve it but just by way of it not being possible for anyone else to.
Edit: I'm in a bit of a mood about my own parents right now, so if anybody else wants me to roast their parents lmk it'll probably be very cathartic.
It's because most of the blood return to your heart is passive. The heart pumps OUT through the arteries pretty hard, but the blood finds it's way back through the veins whenever it feels like it, it just can only go one way because the veins have valves along the way that prevent backflow. A lot of the pressure that actually gets the blood back comes from the contraction of the nearby muscles squeezing the blood up past the valves. So especially if you're standing with your legs all the way down there from your heart, most of the work to get the blood back up is going to come from your calves and thighs flexing.
My A&P teacher very cheerfully illustrated the point by telling us there's actually one animal that does have valves in it's arteries.
We had a guy at one of my old jobs who was trying to get a not guilty by reason of insanity charge because he was facing a life sentence for something he didn't want to spend that time in prison for (the only time it's worth it). Unlike most guys however, instead of faking, he actually drove himself insane! He was actually fine coming in, just had some (dubious) suicidal ideation but perfectly cognitively intact. But the doctor wasn't buying the suicidal thing after a week or two so he started staying awake for weeks on end then slept for weeks on end, soiled himself constantly, refused to eat then binge ate. Just went absolutely feral until he really was.
One of the things he did for a while was refused to lie down at all. Just stood completely still in the hallway staring at the wall. Did it for weeks. Started to look like a candle melting down into his feet until they began to split open and weep interstitial fluid. Anyway the point is we started having to chase him around the unit a little. You'd go just stand next to him and bug him a bit until you got him to walk a little because we needed to start stimulating some blood return. I forget how that story ended he may have still been there when I finally had it with that place and left.