3 ms·
If you haven't heard it before, the Rule of 3 Survival usually applies. 3 minutes without air 3 hours without shelter (extreme conditions, hot or cold) 3 day
by wallflower 13y ago
If you haven't heard it before, the Rule of 3 Survival usually applies.
3 minutes without air
3 hours without shelter (extreme conditions, hot or cold)
3 days without water
3 weeks without food
However, there have been documented cases of extraordinary human survival.
"Swedish Man Survives Two Months Inside Snow-Covered Car"
http://newsfeed.time.com/2012/02/21/swedish-man-survives-two-months-inside-snow-covered-car/ http://newsfeed.time.com/2012/02/21/swedish-man-survives-two...
- popopje 13y agoand documented doubts about those cases http://www.telegraph.co.uk/news/worldnews/europe/sweden/9106027/Swedish-man-was-not-trapped-in-his-car.html http://www.telegraph.co.uk/news/worldnews/europe/sweden/9106...
- wallflower 13y agook, a better example. The point remains that the body can do amazing things to survive once it reaches the point of possibly no return. "Cold comfort: hibernation helped man survive 24 days in wild" http://www.smh.com.au/articles/2006/12/21/1166290678782.html http://www.smh.com.au/articles/2006/12/21/1166290678782.html
- popopje 13y agowhile i don't have a handy link doubting this one, there's not actually any proof that he really spent 24 days "hibernating"
- dhughes 13y agoIt's a good rule but in extreme cases I'm sure it can go either way such as free-divers who can hold their breath for five to ten minutes when diving but the world record is 22 minutes (when not diving).
- x0x0 13y agoThat's because as you descend, the partial pressure of oxygen increases. You require somewhere north of 0.10 Pa02 for consciousness; at sea level you have 0.21 Pa02. So you can consume enough oxygen at depth that when you rise you grey or black out; it's common enough that if you take a breath-hold diving course they will train you to 1 - know how it occurs; 2 - dive in pairs (always one up, one down); and 3 - make sure you are weighted so that your body is buoyant by 20 ft or so.
- muloka 13y agoAlso when under pressure the spleen shrinks substantially which raises the level of oxygen-enriched hemoglobin.
- dhughes 13y agoI've read plasma gets squished out of your blood and fills body cavities such as sinuses to keep your head from imploding.
- 14113 13y agothere's also a reflex which causes your hearth rate and breathing to slow if you feel cold water on your face.