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Anyone ever black out after standing up?

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Originally posted by: Radiohead
Lack of blood to the brain

Blood accumulates in your legs when you're sitting down and have not moved for a while, and tensing of the abdominal muscles restricts the flow of blood from the legs back to the heart
Click to expand...
This would very well explain it... because when I crouch down for even 30 seconds and get back up, I feel a little dizzy for a few seconds. It never gets so bad that I completely black out. I can't believe it happens even when you're in a seated position (and not potentially cutting off any circulation).

 
happens to me if im seating and stand up while i have a hard on....but then again it could be cuz im built like a horse 😛
with all the blood in the wrong head and all
 
Okay, now I gotta tell my story. I'm one of those people who have this problem and one night...

While having a fantastic dream, I woke up, really in the mood for some. I crawled off the bed, pulled my wife's legs to the edge, split them and starting going at it. Well, then, it hits me, I felt faint and fell on her, my head landed on her breasts. Had to lay there for a few minutes feeling faint, blacked out and weak. She woke up shocked and confused as to what just happened.

Not a nice thing to go through.
 
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