Comment by miriam_catira

Yep, fainted so, so many times... Always seems to happen after getting hurt on or near a nerve for me - or after a blood draw. Was scary the first time, embarrassing and annoying every time since then. :) Had a nurse explain that the best way to prevent it is flexing / tightening the legs, to force the blood up out of them. Seems to work, at least for me.