COFFEE

Coffee is known to wake you up and is a must for many people in the office or in everyday life.

A cup of coffee contains 80 to 120 milligrams of caffeine. The effects of this dose last about four hours. However, the duration of the effect can be significantly extended by adding milk to the coffee, since the fat delays the absorption of the caffeine into the blood.
Over time, the body gets used to the caffeine.

Caffeine displaces adenosine, a fatiguing substance, from the receptors on nerve cells in the brain. It increases performance, mood, alertness and concentration. In addition, caffeine increases the speed of thought, facilitates learning and improves long-term memory.