I think I remember reading a paper in science or something that caffeine drinkers have higher bloodflow in their brains then normal. Also, I do not know how I would stay awake right now with out it. There are literally, three huge empty things of coffee on my desk right now.

The woman here is clearly a deluded, ill-educated, bile-spewing plutocrat who sees no value in life unless it is hers and hers alone. We don't have many people like that in Britain, everyone here knows all human beings have a right to healthcare whether they can afford it or not. We just have a handful of neo-conservative bigots who believe free healthcare for all is wrong because seeing poor people suffer and die increases bloodflow to their withered genitals.

America is, sadly, plagued by such impotent neo-cons, and I feel sorry for each and every one of you. You are stuck in a place filled with intellectually challenged individuals who ironically see the kind of freedom, humanity and decency your founding fathers fought for as communism.

"Bloodflow" is like my favorite song ever.

oh yes dag, very much so. referred to as a 'blackout', the g's pool the blood into your legs. in order to counter this effect, you must flex the HELL out of your legs, and you're supposed to tense every muscle you can in your lower body. usually grunting (as if constipated) helps as well.
usually pilots wear flight suits that automatically inflate in certain areas, to repel the bloodflow into the legs.
the Blue Angels, Thunderbirds, and the like do not use G-suits, because the air bladders inside them would repeatedly deflate and inflate. That would interfere with the control stick between a pilot's legs.

conversly, pulling negative G's has the possibility of causing a 'redout' which is due to the blood rushing INTO the brain and the eyes, thus causing the pilot to see red.