The drugs are normally prescribed to treat attention deficit hyperactivity disorder (ADHD), but healthy students use them to get a leg up in school, by improving focus, concentration and memory.
Adrenaline, or epinephrine, is a hormone that dilates an individual's air passages and increases his heart rate when he is faced with a stressful situation. The hormone is secreted from the adrenal glands to help ensure survival under dangerous situations.
The fast-paced action of basketball can lead to the production of adrenaline in the body. Diets high in caffeine and protein can increase the amount of adrenaline released during stressful times. Computer games have been shown to increase adrenaline in the body.