Caffeine:Caffeine is a natural stimulant found in coffee that acts on the central nervous system, increasing alertness and reducing fatigue.
Tolerance:Tolerance refers to the body's ability to adapt to the effects of caffeine over time, requiring larger amounts to achieve the same level of stimulation.
Addiction:Addiction is a condition characterized by compulsive drug-seeking behavior and continued use despite negative consequences. In the case of coffee, some individuals may develop a psychological or physical dependence on caffeine.