Anyone else becoming shorter when taking midday nap?

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I think my spinal disks are being compressed but I lose around 2 cm when i take a midday nap.
I hate being so self-conscious about this, some days im ridiculously tired but I try to stay awake so I don't shrink

Its small things like that which tilts me towards LL, i want to be a free man again. I want to live without such fear and self-conscioussness.

Edit Post

I already know the spinal discs get decompressed when i sleep at night, hence feeling taller in morning and shorter in night.
But the midday sleeping is not a joke. It goes in opposite direction, I experience it and thats why I asked if anyone else felt it too.
Its instantly noticable, like the floor is closer to my eyes when i get up from bad.