This fact should be no surprise to you since you have probably experienced it if you are coffee drinker. Because coffee mildly stimulates your central nervous system, it proves to boost alertness and attention. This can be very beneficial for those who work and drive at night and need increased wakefulness. Studies also show that coffee is effective in improving performance in those who are jet-lagged or suffering from a sleep disorder. Research done by the European Food Safety Authority concludes that the amount of caffeine in a regular cup of coffee or about 75 milligrams can enhance your cognitive abilities, memory, and concentration, all good things to keep in mind next time you are working late, driving at night, or studying for that important test!