Is it normal to go temporarily blind when getting up?
So sometimes after sitting down or laying down for even short periods of time, when I get up to a standing position I lose all eyesight and my head begins to feel funny. After about 5~10 seconds, I return to normal. Is this normal?
P.S. I'm 16 and I hear that adolesence is a major part in heaps of health issues that fix themselves after puberty.