A June 2000 study published in Psychopharmacologia studied the drug's effects on people's abilities to accomplish demanding tasks despite a lack of sleep.
At the United States Army Aeromedical Research Laboratory in Fort Rucker, Alabama, six pilots were kept awake continuously for two forty-hour periods.
They were given Modafinil in one session and a Placebo in the other.
The pilots were then evaluated in helicopter simulator flights, resting electroencephalograms (EEGs), and mood questionnaires.
The drug lessened the effects of sleep deprivation in four of six flight maneuvers tested compared to the placebo.
It also reduced slow-wave EEG activity (when one begins to fall asleep, EEG begins to slow) and decreased self-reported problems with mood and alertness.
Watch the Matrix scene when Morpheus shows Neo two pills: a blue and a red one. If Neo chooses the blue pill, he will wake up in his bed anf forget about everything that happened. If he takes the red one he will see "how far the rabbit whole goes":
That means the inner core leaks out , which is known as a disc herniation or a herniated disc.
The weak spot in the outer core of the disc is directly under the spinal nerve root, so a herniation in this area puts direct pressure on the nerve, which in turn can cause a pain that radiates all the way down the patient’s leg to the foot.
Watch Chiropractic - A New Treatment for the Herniated Disc :
I wonder if it is more of a commercial than an unbiased discussion of the improvement that this young woman experienced.