How does our brain keep track of time?

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Last night I went to bed sorta late and forgot to set an alarm, but I remember thinking it’d be nice to wake up around nine.

I woke up at EXACTLY 9 AM – literally to a minute. Could be a coincidence, except I do tend to wake up around nine on most days, with or without an alarm. Only exceptions are when I go to bed extremely late and force my body to take longer to recover, I suppose.

Made me think of my late Grandma who kept telling me how she can set an alarm in her head and wake up at any time she wants. I always thought it’s bullshit.

I mean, if that was true, how would that even work? Time is a concept, and a relatively new one at that; IIRC we only started really counting minutes and seconds around the Industrial Revolution? Of course there’s sunrises and sunsets and the whole natural circadian rhytm thing, but most people are detached from it anyway.

Does our brain learn to count hours and minutes somehow because our lives revolve around that so much? Is it all just a big ol’ bias of some sort?

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Anonymous 0 Comments

My dad told me when he was younger he used to thump his forehead with a his fingers, once for every hour until he wanted to wake up.

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