When you get up really fast do you ever feel like passing out?

Question

have you ever stood up really fast and felt like passing out?

Answer 1

Yeah, the more relaxed you are when lying down the more you notice it when you get up fast.

It's normal.

Answer 2

Totally normal.  It's called a head rush.

Answer 3

Yeah. Your blood pressure dips low.  

Answer 4

Yes . It's quite normal, especially if you've been sitting a long time. or haven't eaten.  The body has to make quite a complex adjustment of blood flow, arterial pressures, venous volume, etc. every time we change position.  It's a wonder we don't all faint more often.