Coffee is a popular drink worldwide, which is prepared from roasted and ground grains. Coffee grains are cultivated in tropical and subtropical regions of the planet, mainly in South America, Africa and Asia. Coffee has a strong and aromatic taste, and is often consumed for its stimulating effects on the nervous system. It contains caffeine, a substance that can improve vigilance and concentration, and is often used to fight fatigue and drowsiness. Coffee is also a source of nutrients, including B vitamins and minerals, such as potassium and magnesium. It also contains antioxidants, which can help protect the body from free radicals and maintain cell health.