Why do you colapse immediatly after your heart has stopped beating because of a heart attack and not a few minutes later after your body has run out of oxygen?
In: 55
There is a delay, it just isn’t very long. Your brain needs a *lot* of oxygen all the time to function and will shut down (causing unconsciousness) within a few seconds of losing access to fresh oxygen (as happens when your heart stops.) Brain activity can continue in a limited way for a few minutes, but after that, it’s kaputt.
The only reason that you can maintain consciousness for any time at all after you stop breathing is that there’s air in your lungs that fresh oxygen can still be drawn from.
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