Why do i feel dizzy and light-headed when i stand up?!


Question: Why do i feel dizzy and light-headed when i stand up?
well this has been happening for the past 3 days,
when i sit for like 15 minutes then get up i feel very dizzy for like 5-10 seconds and my head feels like its gnna fall off,
i get about 7 hours of sleep, i dont get tired much, and yesterday i was extremely tired even though i didnt do nothing all day, like as soon as i stood up i couldnt hold myself its like my body was pulling me down and my eyes just shut.
could it be because of what i eat,maybe i dont have enough energy or because im underweight by abit? i doubt it though because it just started happening recently.
thanks guys

Answers:

Best Answer - Chosen by Voters

That use to happen to me too. Sometimes I would get up fast then feels like my head is dizzy and my vision was going black.. Thought it was because I didn't eat right. But who knows..




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