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It is called orthostatic hypotension...



and it just means you stood up quickly and your blood pressure dropped a little. Nothing to be too concerned about because it happens to everyone once in a while and gets more likely the older you get (although the numbness is a bit extreme - you must be exhausted).



Get up a little slower next time, eat something to keep your blood sugar up and get some sleep!!!!!

Sitting for an average of 20 minutes causes a noticeable drop in circulation (mostly to your head).



Pulling an all-nighter ALWAYS means your should eat a little more than usual. Even if you're not hungry, make yourself snack. You deprived your body of rest and it needs extra energy from somewhere.



And until you get some more sleep, stand up slowly. Or you really might faint.

Um, I would definitely sleep asap. I'm sure it's mostly from the lack of sleep. If you're body is deprived of that much oxygen [your oxygen is increased during sleep], you could possibly blackout or pass out. If you also had not eaten then that could be why when you stood up you got dizzy and "blacked out."

if you were sitting 4 a long time the blood could of wentb down to your feet so when u stood up there was not enough blood going to your head that's why your bottom half went numb and you were tried so your body doesn't react as fast no worries though

Were you sitting for a long period of time? What did you mean about an "All Nighter"? Maybe you were pinching a nerve while sitting, or your blood pressure dropped.

SEE A DOCTOR,