Okay so for four years this has been happening to me since I passed out one time in class by holding my breath to see how purple I could make my face (real smart kid, right?) Ever since then I will get up and after about a minute standing my vision will turn into what looks like TV Static and my legs get weak. I remember once my science teacher said it was a way for the body to tell us it needs nutrients. But recently I have been trying to solve it by drinking a lot & eating normally, it isn't fixing it. Sometimes when I get up I have to lay on the ground, since I don't trust my body to support me, and it'll last for near two minutes. Other people are starting to notice, too. I'll get up and get halfway through the classroom and just stand there staring vacant into nothing. It would really help if I know a name for this or how to fix it?