4 ms·

It sounds like you experienced oxygen deprivation.

by pharrington 2y ago

hackernewds 2y ago
oxygen deprivation is not euphoric. shouldn't be so flippantly reductive
- huygens6363 2y ago
  I thought it was common knowledge that it is in fact euphoric. Happy to be told I’m wrong though. (Think of nitrous oxide and .. the thing with asphyxiation and a certain pleasurable activity)
  - karmakurtisaani 2y ago
    Definitely mildly euphoric and relaxing. Source: have been choked out in BJJ training a few times. Woke up happy and relaxed every time.
  - aeonik 2y ago
    It is common knowledge. Kids play the choking game, people die from autoerotic asphyxiation, and folks who fly or dive are trained to recognize the symptoms as well. The burning feeling that you get when your hold your breath is a build up of CO2, not a lack of O2. PDF warning: https://www.faa.gov/pilots/safety/pilotsafetybrochures/media/hypoxia.pdf https://www.faa.gov/pilots/safety/pilotsafetybrochures/media...
jobs_throwaway 2y ago
how do you suppose he got oxygen deprivation by breathing deeply?
- retrac 2y ago
  The hypoxia/suffocation instinct, the irresistible urge to breathe, is caused by carbon dioxide levels in the blood. The nervous system has no means of directly detecting oxygen, or its absence. If you walk into a room of pure nitrogen there is almost no warning. The CO2 levels remain low, everything is fine while all your oxygen is rapidly dumped to the oxygen-free air - two deep breaths gets rid of most of it. Another 15 seconds after that you are dizzy, another 15 to 45 after that you are unconscious. Terrible design, IMHO, but presumably not a common situation in the ancient environment. If you hyperventilate, it drives out the carbonic acid and CO2 in the body. But the blood is normally already near saturation for oxygen. This unusually low level of CO2 allows you to hold your breath much longer by suppressing the suffocation response, sometimes to the point of unconsciousness. You don't realize you should breathe. You feel fine, just a little lighthea... This is why you should never hyperventilate before diving under water.
- Aerbil313 2y ago
  You don't get more oxygen by breathing more. When you breath more the CO2 is expelled from your blood and hemoglobin cannot efficiently collect and transmit O2 in the absence of some specific amount of CO2. In fact most people overbreathe, and they should be breathing less to be optimally oxygenized. See https://pubmed.ncbi.nlm.nih.gov/30252284/ https://pubmed.ncbi.nlm.nih.gov/30252284/ The book Breath: The New Science of a Lost Art details the journey of James Nestor as he goes over all these different methods and exercises, it's the #1 book I recommend to everyone. The number one certain conclusion to take home from the book that'll literally extend your lifespan significantly: Don't mouthbreathe, never ever.
  - _DeadFred_ 2y ago
    How long before this become a TIL on Reddit? I'm guessing it's already in the que. Then it will slowly make it's way to different sites with titles like 'This one thing is ruining you energy level'...'5 quick hacks to increase your oxygen levels, you will never guess what number 5 is'... Aerbil313 putting in the hard work to keep the content wheels of society turning! But I do love seeing these 'echos' bounce from discussions like this off into public consciousness then into the randomest places.
  - broken-kebab 2y ago
    While Bohr effect is a real thing obviously, your description doesn't seem to be fully correct (though it's not my field of expertise). Haemoglobin will link with O₂ just fine when level of CO₂ is decreased, only release of it in tissues will be negatively affected. But it's not like it stops at all, and to me it's not clear if it can really lead to a full-scale oxygen deprivation. Blood low acidity resulting from low CO₂ can explain symptoms like involuntary muscle contractions described by that poster above on its own
  - tstrimple 2y ago
    Huh. I always associated hyper ventilating as a mechanism to increase O2 in the body allowing for longer free dives, etc. Looks like those benefits mostly come from lower initial CO2. https://www.deeperblue.com/why-do-so-many-freedivers-hyperventilate/ https://www.deeperblue.com/why-do-so-many-freedivers-hyperve...

It sounds like you experienced oxygen deprivation.

hackernewds 2y ago

oxygen deprivation is not euphoric. shouldn't be so flippantly reductive

huygens6363 2y ago
I thought it was common knowledge that it is in fact euphoric. Happy to be told I’m wrong though. (Think of nitrous oxide and .. the thing with asphyxiation and a certain pleasurable activity)
- karmakurtisaani 2y ago
  Definitely mildly euphoric and relaxing. Source: have been choked out in BJJ training a few times. Woke up happy and relaxed every time.
- aeonik 2y ago
  It is common knowledge. Kids play the choking game, people die from autoerotic asphyxiation, and folks who fly or dive are trained to recognize the symptoms as well. The burning feeling that you get when your hold your breath is a build up of CO2, not a lack of O2. PDF warning: https://www.faa.gov/pilots/safety/pilotsafetybrochures/media/hypoxia.pdf https://www.faa.gov/pilots/safety/pilotsafetybrochures/media...

jobs_throwaway 2y ago

how do you suppose he got oxygen deprivation by breathing deeply?

retrac 2y ago
The hypoxia/suffocation instinct, the irresistible urge to breathe, is caused by carbon dioxide levels in the blood. The nervous system has no means of directly detecting oxygen, or its absence. If you walk into a room of pure nitrogen there is almost no warning. The CO2 levels remain low, everything is fine while all your oxygen is rapidly dumped to the oxygen-free air - two deep breaths gets rid of most of it. Another 15 seconds after that you are dizzy, another 15 to 45 after that you are unconscious. Terrible design, IMHO, but presumably not a common situation in the ancient environment. If you hyperventilate, it drives out the carbonic acid and CO2 in the body. But the blood is normally already near saturation for oxygen. This unusually low level of CO2 allows you to hold your breath much longer by suppressing the suffocation response, sometimes to the point of unconsciousness. You don't realize you should breathe. You feel fine, just a little lighthea... This is why you should never hyperventilate before diving under water.
Aerbil313 2y ago
You don't get more oxygen by breathing more. When you breath more the CO2 is expelled from your blood and hemoglobin cannot efficiently collect and transmit O2 in the absence of some specific amount of CO2. In fact most people overbreathe, and they should be breathing less to be optimally oxygenized. See https://pubmed.ncbi.nlm.nih.gov/30252284/ https://pubmed.ncbi.nlm.nih.gov/30252284/ The book Breath: The New Science of a Lost Art details the journey of James Nestor as he goes over all these different methods and exercises, it's the #1 book I recommend to everyone. The number one certain conclusion to take home from the book that'll literally extend your lifespan significantly: Don't mouthbreathe, never ever.
- _DeadFred_ 2y ago
  How long before this become a TIL on Reddit? I'm guessing it's already in the que. Then it will slowly make it's way to different sites with titles like 'This one thing is ruining you energy level'...'5 quick hacks to increase your oxygen levels, you will never guess what number 5 is'... Aerbil313 putting in the hard work to keep the content wheels of society turning! But I do love seeing these 'echos' bounce from discussions like this off into public consciousness then into the randomest places.
- broken-kebab 2y ago
  While Bohr effect is a real thing obviously, your description doesn't seem to be fully correct (though it's not my field of expertise). Haemoglobin will link with O₂ just fine when level of CO₂ is decreased, only release of it in tissues will be negatively affected. But it's not like it stops at all, and to me it's not clear if it can really lead to a full-scale oxygen deprivation. Blood low acidity resulting from low CO₂ can explain symptoms like involuntary muscle contractions described by that poster above on its own
- tstrimple 2y ago
  Huh. I always associated hyper ventilating as a mechanism to increase O2 in the body allowing for longer free dives, etc. Looks like those benefits mostly come from lower initial CO2. https://www.deeperblue.com/why-do-so-many-freedivers-hyperventilate/ https://www.deeperblue.com/why-do-so-many-freedivers-hyperve...