Why Do I Feel Lightheaded When I Stand Up?
Have you ever stood up and felt a bit dizzy and lightheaded? Learn why it happens in this SciShow Quick Question! Hosted by: Michael Aranda ---------- Support SciShow by becoming a patron...
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So there you are, crouched low on the ground, tying your shoe or inspecting someinteresting bit of trash or sidewalk art or spring flower… and everything’s cool untilyou stand up too fast.Then comes the headrush.Suddenly you’re all dizzy and feeling like you might black out, and just as you thinkyou’re gonna fall over, everything’s back to normal, and you’re left wondering whatthe heck just happened?Well, probably your blood pressure dropped is what happened.Your blood pressure will vary a little throughout the day, like if you’re stressed or relaxing,running or sleeping, but in general it exists within an average range.That said, individual’s normal ranges also vary -- for example, athletes typically havelower blood pressure than overweight smokers -- and...
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So there you are, crouched low on the ground, tying your shoe or inspecting someinteresting bit of trash or sidewalk art or spring flower… and everything’s cool untilyou stand up too fast.Then comes the headrush.Suddenly you’re all dizzy and feeling like you might black out, and just as you thinkyou’re gonna fall over, everything’s back to normal, and you’re left wondering whatthe heck just happened?Well, probably your blood pressure dropped is what happened.Your blood pressure will vary a little throughout the day, like if you’re stressed or relaxing,running or sleeping, but in general it exists within an average range.That said, individual’s normal ranges also vary -- for example, athletes typically havelower blood pressure than overweight smokers -- and...
