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  1. Am I the only person that has had the dream where you in a falling lift and try to work out when it’s about to hit the ground, so you can jump, just before?

    I have this dream loads 😂

  2. On the last one:

    That only applies if you're staying in one place and not doing anything.

    If you're walking and active, you generate body heat quickly.

    You can easily wind up sweating.

    Cold is ome thing.

    Wet and cold is dangerous. Sweating is bad. Movies & video games where people get their feet wet in the cold…

    Yeah, in real life, you don't get your feet wet in the cold unless it's necessary.

    Anyway, the point is that in reality, thermal management may make eating snow necessary. To keep your body heat down to minimize sweating.

    How much energy does it actually take anyway?

    I've always wanted to the math and check if these ideas are valid.

    I've been told not to drink very cold water when working in the heat because it takes too much energy to for the body to warm it up.

    I've been told similar myths about it taking too much energy to digest food.

    What I do know is legit it that you can't survive long without water.

    Apparently, you have at most 2 days, maybe 3 if you're very lucky. Then cramps and stuff. You're alive, but not functional enough to get the water you need.

    Without actual hard evidence I have a hard time buying into this idea that it takes too much energy to equalize temperatures.

    If anything, the hazard is hypothermia if you're not active.

    If you're active, "cotton kills." Because it absorbs water and holds it. When you stop and cool-down, you're in dangerger without a fire or warm-up.

  3. If you really don't have a choice and need to find a food source, you can use army/tribal method to fairly safely find new edibles.
    A tiny amount of the substance, no larger than a pinhead, is applied to clean skin on either the wrist or inside the elbow to clearly observe any reactions. This site is monitored for 24 hours to detect both immediate and delayed allergic reactions. Should no adverse reactions occur, a slightly larger amount of the substance, akin to the size of a grain of rice, is then applied to the same skin area. This application is observed for an additional 24-48 hours to identify any delayed reactions, crucial for spotting potential irritants that might not cause immediate symptoms.

    Following a successful extended skin observation without any adverse reactions, the method progresses to a preliminary oral test. A minuscule amount of the substance, comparable to a grain of rice, is placed on the inside of the lip to check for any irritation or reaction, with observations made for discomfort, swelling, or other adverse effects over 24 hours.

    The next phase is the gradual ingestion process. After passing the preliminary oral test, a tiny amount of the substance, again no larger than a grain of rice, is consumed, followed by a waiting period of 72 hours. This duration is critical for accounting for toxins with delayed onset effects. If no adverse symptoms emerge within this timeframe, the substance may be cautiously considered potentially safe for consumption. However, the consumption of very small amounts continues, with a gradual increase in portion size over several days, while closely monitoring the body's response.

  4. I'm a professional armchair quarterback so I know from first hand conjecture that if if you have plenty of wood or clean burning fuel like an emergency single burner propane stove and unlimited fresh snow drinking warm water is a very good idea. Add to that some nice herbal tea, powdered hot chocolate packets and Ramen noodles with a good signal, fire orange smoke and red flares and your chances of survival are greatly increased.

  5. What if you ate only a tiny bit of snow at a time, like one teaspoon every 15 minutes? The guy was trapped in his vehicle, so it's likely he was able to use that situation to melt some of the snow.

  6. At the start of the the Ukraine-Russian war, I saw a female Russian officer telling new recruits to take some tampons from their wives before heading to battle for gunshots.

  7. "Increased energy consumption increases how much water the body expels…" This are some caveats to this statement and it should really say "may increase".

    To burn more calories you will need more oxygen, which means more breathing, so evaporative losses from the lungs may increase but would be dependent on humidity. However, cellular respiration produces not only carbon dioxide, but also water. In a high humidity environment, evaporative losses from breathing will be reduced – possibly minimal if breathing through the nose.

    Urination losses are generally driven by your level of hydration. The only way you're going to be peeing more is if you're well hydrated.

    Perspiration is mostly triggered by our bodies overheating, but if our body is being driven to increase metabolic rate to generate heat and avoid hypothermia, it's unlikely there will be much, if any, perspiration going on.

    I could see the water balance equation going badly for someone in a low humidity environment, but less convinced of this dehydration in an enclosed humid environment. If Peter Skyllberg really did survive inside a snowed-in car for two months by eating snow, that shows that it's at least possible. Without some source of water he wouldn't have lasted more than a few days. Hypothermia is a real concern, though. He apparently had warm clothes and a sleeping bag that was sufficient to keep him warm with some excess body heat to also melt the snow. In a low humidity environment – outside with the ability to move around and do work and lose a lot more moisture, the hydration/dehydration balance may not work out so well. I wouldn't rule out the possibility of snow leading to dehydration in some conditions, but hypothermia seems like the bigger risk.

  8. I heard that for the fire in a cave it’s actually the opposite because heat in the entrance would make the part of the smoke that gets inside to accumulate instead of escaping. It’s an interesting point about the heat expansion of the rocks though. Seems like it’s a gamble either way.

  9. This is kind of the reason that in modern times humans now eat a diet that is completely unsuitable for them. Not to mention the amount of sugar and processing going on but you've probably heared that your diet should be as varied as possible but this is complete ass. A lot of animals have evolved eating very specific foods, have evolved over time to deal with certain toxins of plants. Humans have a bit more leeway are not very different. One glance at our anatomy should tell you humans should eat a high animal food diet, predominantly meat. This is because our digestive systems are quite short, have low stomach acid PH's and have several ways to digest animal fat in compare to plant matter.

    If you really need to eat something in an emergency, go hunting, if you can pull it off. Like our ancestor's have done for hundreds of thousands of years.

  10. Actually you should NOT make the fire at the cave entrance, because the draft will pull the smoke into the cave and not outside of it. The best way is to make the fire near the middle back of the cave. The smoke will rise and be sucked out of the cave as warm air will want to rise and leave and new fresh cool air will circulate inside. A side benefit of this is that the walls will reflect the warmth from the fire back at you so you get warm faster and more evenly.

  11. fyi, you'll never actually reach terminal velocity because of the cushion of air under the elevator, and most have hydraulic pistons at the bottom to prevent death (you'll still get hurt real bad though and probably break something). Also, most elevators have like 6+ cables when all they really need to function is 1, complete catastrophic failure is extremely rare

  12. In critical emergencies involving gunshot wounds, the pressure really is the critical element. The pressure against the wound is what triggers the body's natural clotting response. There's a lot of complex mechanisms involved, but the punchline is this: if you can maintain constant pressure for long enough the wound will close itself up, albeit in a weak manner initially and is extremely vulnerable to reopening. But if you are in an extreme situation and you have to move the wounded person in question, it's much more survivable if you're able to maintain pressure on the wound. The longer you can maintain pressure, the better.

  13. Are you sure snow is dehydrating? Obviously it takes energy to melt it but what process results in a net loss of water? Didn't you cite a story where it worked? If it was a chemistry problem would it have worked for him?

  14. If you're in a falling elevator, you should stand with your knees locked while bending backwards so that the absortion of force passes safely through your body. Also, put a metal spoon in your mouth before impact to prevent swallowing your tongue

  15. If you are in an elevator and the cables break then the elevator brakes that cut in if the elevator is moving past a certain speed would cut in. So the question is mute.

  16. Why is laying down the best solution for falling in an elevator? He says share the impact all over your body rather than legs and knees but those bits are far less important than chest lungs heart surely…?

  17. my friends kneecap got ripped off he packed with super glue then went in to have it fixe the doc said that was good thing to do it saved his knee cap so even if its dirt, tan pon you have to use whatever you have available to stop bleeding.

  18. The last one isn't entirely true.

    The tip is "Do not eat snow for hydration". Eating snow to keep hydrated, and keep yourself alive is absolutely plausible and should be done. It can increase your survival rate by giving you just a few extra days before you ultimately succumb to the wilderness. This video seems to suggest that if it doesn't keep you alive indefinitely then its bad, which is not the case. Do anything and everything that will keep you alive for just that tiny bit longer.

    That's not to say it isn't dangerous though. As the video says, it can lower your core temperature which is bad. You shouldn't eat too much, but it also suggests that you need to be eating and drinking as much as you normally would, which is also false. A human who is waiting for rescue, or exerting very low amounts of energy, doesn't need as much food and water to stay alive. You need just enough energy to keep your internal functions working at minimum capacity, which doesn't take too much energy. There is a reason why humans are found in conditions similar to the story of the person who was stuck in a car for a month with only snow to eat and survived just barely. Human bodies are incredibly durable and dynamic in the sense that it can shut down and even reserve energy for more critical parts to keep you alive.

    If we're talking about these most extreme of situations, then eating a little snow here and there so long as you don't over power your core temperature is fine and can help extend how long you stay alive. Putting a little snow in your mouth and having it almost instantly melt isn't messing with your core temperature, that's all ambient heat that would be lost with or without snow. Keep it in your mouth until it melts and warms up, your body isn't exerting any extra heat or energy to do that. Then swallow it, and your body isn't going to be effected, and the core temperature can stay constant, and your body will not need to use any extra energy to "melt the snow".

    Also a little fact. it's not the body trying to melt the snow by making more heat. It's the fact that if you do it how this video is suggesting, where you just stuff your mouth with snow, then swallow it, you'll be drastically dropping your core temperature, which your body WILL then try to compensate by using more energy to heat yourself up again, which is very bad.

    TLDR: If you don't eat the snow like an idiot stuffing your mouth and swallowing it instantly and drastically dropping your core temperature, then eating snow is absolutely 100% a survival tactic that can give you a few extra days before you ultimately succumb to the environment if you're really in that bad of a situation.

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