Why do i discern dizzy,blurred illusion and headache when i stand up?

i feel this method after i been lay down and try to get up hurried and walk around. i also quality this way when i move about on roller coasters. sometimes i black out for a second or two. is here anything i can do or take for this?Why do i discern dizzy,blurred illusion and headache when i stand up?
Sometimes while lay down, especially with your foot elevated(head below the feet within the same plane) blood will run to lower elevation. Getting up fast forces the blood out of your come first and back into lower extremeties cause a "head rush" and sometimes verbs, worse passing out. You could also possibly enjoy low blood sugar if very minimal time lay down
go to a doc. Your symptoms could be high-ranking blood pressure, heart problems, vertigo or a mass of other reasons, could be harmful. Get checked out please.
It is caused by your blood that at the double leaves your brain when you elevate your head from your body... You can name it "blood rush". The only entry you can do those stuffs slowly so that you don't get blood rush within your head. That situation is pretty normal, it also happen to me sometimes and I just agree to it pass