Nothing stimulates our thinking better than a cup of coffee.
People of senior age who drink 220-270 mg of coffee in the morning or during the day have better memory than people using drinks without caffeine. This was found out in a study conducted by scientists from Arizona.
By the way, this fact is in no contradiction with the results of other studies during which it was found that the memory of old people works best in the morning, and late in the day it's harder for them to overcome forgetfulness.
Gerontologists recommend senior people to schedule important meetings for the morning and to drink a cup of coffee, which is able to keep their head clear also into the second part of the day.
But because of high caffeine content people with hypertension shouldn't abuse this stimulant.