Why Do I Feel Lightheaded When I Stand Up?

Have you ever stood up and felt a bit dizzy and lightheaded? Learn why it happens in this SciShow Quick Question!

Hosted by: Michael Aranda
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Sources:

[ILOVEMINECRAFTFUL]

does anyone else have their sight go black for a bit when they stand up?? no???

[hiiper]

Me: stands up


my eyes: loading terrain

[brodinigotmagic]

Oh thank god! Wikipedia told me I have 3-4 weeks left to live.

[swanihilator]

Me: *Stands up too quickly and starts going blind for 10 seconds*
Me: Hold up.

[FakeBlocks]

"Because you have cancer"

Sincerely, WebMD

[TooBaldeh]

Me: “stands up”

My brain: Loading World . . .

[Foldupfiber]

Me: just gunna ty my sho...
Shadow dimension: welcome bro

[LuterofromTx]

I get really dizzy, like everything looks blurry and greys out and all i can do is just stand there with a blank stare until it's over. I almost fall over from losing balance sometimes as well. Crazy

[Nightli]

this shit happens to me like every day

[hmmhmm]

who feels lightheaded when they stand up after watching something on their phone or is it just me

[jiminhasasmallredchillipeper]

This happens to me all the time like I can feel the whole room spinning and It goes black for like a few seconds

[doroteacc]

OMG I THOUGHT I WAS THE ONLY ONE TO HAVE THIS

[jaimesalgado]

I once Stood Up and Suddenly, I felt light headed, I saw everything black and dizzy, I dropped to the ground. it sure doesn't feel good.

[TheLegend-ipoq]

Me: Alright i’m gonna purposely stand up fas—

My soul: Ight imma head out

[tomasfabianserrut]

Does anyone feel dizzy like they're about to fall in the morning as soon as you step into sunlight?? Or is it just me

[Arborem]

I've passed out from head rushes before, it felt great.

[LovingDeantheGodMachine]

This happens to me a lot and one time I actually fell. I like lost control of my legs and fell it was the weirdest thing!

[SkySentry]

This happens to me at least 3 times a day, I'm getting used to it really. I can feel my heart pounding like a jackhammer when I stand up, and always say to my self... "so this is death huh"

[shwirlll]

Happens to me almost every day. Sometimes it happens after I’m standing in one position without moving for too long. I fainted in church once while we were praying because of that. I lost full consciousness for only a few seconds

[Kezajaws]

Question: Why does water taste so disgusting when it's warm?