if we are unconscious during sleep, why isn’t going to sleep like jumping forward in time?

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If sleep means the disappearance of consciousness, shouldn’t sleeping be basically like blinking, and then the next thing we know it’s eight hours later?

But in reality, we can tell some time has passed. And me, personally at least, I can usually estimate how long I’ve been asleep with some accuracy.

In: Biology
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>But in reality, we can tell some time has passed. And me, personally at least, I can usually estimate how long I’ve been asleep with some accuracy.

Only because you immediately realize you’ve been asleep, and you can tell from context clues approximately how much time has passed.

We’re not unconscious, like knocked out.

Sleeping is in the subconscious, where our brains are still working away, and aware of our surroundings (hence being about to be woken by noises, etc.)

Only part of our brain is “on hold” when we sleep

For all intents and purposes, you do “jump” forward in time as far as you are consciously aware. But you’re not stupid and you immediately remember that you’ve been asleep and that time was moving normally during that time. You are very aware that you didn’t just break the entire spacetime continuum.

I bet if you went to sleep in a pitch dark box with no indications of the outside world and woke up, you wouldn’t be able to tell for how long you’ve slept

There are different meanings to the word “unconscious”. When you’re in a coma or under anesthesia, your brain activity is greatly reduced and you don’t do much in the way of thinking. So being put under anesthesia is like jumping forward in time. You’re in one room and someone is putting a mask on your face, then you are suddenly in another room and it’s hours later and you are woozy and in pain. That’s a type of unconscious. But when you’re asleep, you still have a lot of brain activity. You dream, and you still have some limited awareness so if there’s a noise or someone touches you, you are aware of it and wake up (YMMV, some people won’t wake up).