31–40 of 47 posts
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This one is great: https://www.youtube.com/watch?v=oLAs11gkqKE . Ricky Gevais: "Sorry sorry David seriously, this isn't a trick. You're just sticking a needle through your fucking arm. What are you doing? That's fucking horrible. You're a maniac. That's the worst thing I've ever seen in my life."
Why was there no blood?
That's very cool but it's definitely a stunt, breathing pure O2 is definitely not normal. I'm more impressed by spearos going down for several minutes, swimming hard, doing work, fighting a fish on a line and coming back up. I can manage 1:30 with that kind of activity but I have met folks who can go several minutes.
Wow. That's approaching the time for dolphins, whales and similar sea mammals. Of course, his record is without doing any work, unlike a dolphin which is swimming. Free divers are swimming though and their underwater time is very impressive.
PSA: Trying to hold your breath for a long time is dangerous, especially if you hyperventilate first. People die this way. The hyperventilation thing is because your brain needs oxygen to live, but your impulse to breathe is driven by carbon dioxide saturation. When you hyperventilate, you get rid of a ton of carbon dioxide, and you can get into a situation where you don't have enough CO2 buildup to trigger the signa…
CO2 levels rise to unhealthy levels (700ppm) within a few hours of a typical bedroom if you keep the doors and windows closed. Its also why Submarines have CO2 scrubbers.
PSA: Trying to hold your breath for a long time is dangerous, especially if you hyperventilate first. People die this way. The hyperventilation thing is because your brain needs oxygen to live, but your impulse to breathe is driven by carbon dioxide saturation. When you hyperventilate, you get rid of a ton of carbon dioxide, and you can get into a situation where you don't have enough CO2 buildup to trigger the signa…
If you do any of this without supervision it's just a matter of time until you die.
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CO2 levels rise to unhealthy levels (700ppm) within a few hours of a typical bedroom if you keep the doors and windows closed. Its also why Submarines have CO2 scrubbers.
Do you have any source for this? A bedroom isn't sealed shut like a submarine would be?
That's very cool but it's definitely a stunt, breathing pure O2 is definitely not normal. I'm more impressed by spearos going down for several minutes, swimming hard, doing work, fighting a fish on a line and coming back up. I can manage 1:30 with that kind of activity but I have met folks who can go several minutes.
I'm very curious: once you've practiced for a bit, are you still having a gigantic fight with your brain/lungs to take a breath, or is that "put off" until, in your case, 1:30?
There is usually an easy period until the desire to breath starts, from 1 to 2 minutes in. The next minute or so is tricky, you get contractions as your body tries to breathe. After that you start to slowly zone out, but you're no longer in pain. Eventually the world closes in around you.
When spearfishing you're typically fairly conservative and never get past the first easy section.
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Do you have any source for this? A bedroom isn't sealed shut like a submarine would be?
I have a CO2 monitor, and I can confirm that it goes up at least that fast in my home. I can't speak for submarines or healthy levels. I've been wondering for a while why environmental rhetoric only talks about the global rise in CO2 in terms that make people think it's just an atmospheric phenomenon rather than notably changing what they're breathing. It looks like we've nearly doubled the CO2 we're breathing in the…
Because the levels in the global rise are negligible in comparison to what is dangerous for breathing. Here's a hint, if you think you've spotted something blindingly obvious in a field scrutinized by hundreds of thousands of scientists, you're probably making a mistake.
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I have a CO2 monitor, and I can confirm that it goes up at least that fast in my home. I can't speak for submarines or healthy levels. I've been wondering for a while why environmental rhetoric only talks about the global rise in CO2 in terms that make people think it's just an atmospheric phenomenon rather than notably changing what they're breathing. It looks like we've nearly doubled the CO2 we're breathing in the…
>only talks about the global rise in CO2 in terms that make people think Because the levels in the global rise are negligible in comparison to what is dangerous for breathing. Here's a hint, if you think you've spotted something blindingly obvious in a field scrutinized by hundreds of thousands of scientists, you're probably making a mistake.