Caffeine is one of the world’s most widely used drugs. Many anthropologists believe its use may date back to the Stone Age. Caffeine was first extracted from coffee in 1821. Coffee originated in Ethiopia and by the was later introduced to Arabia and the rest of the east. Ethiopian nomads discovered coffee through their animals, the animals would eat the fruits from the trees they would have an energy boost. The nomads tried eating the seeds and had an increase in energy. Coffee has since been linked to religious ceremonies, some people involved in the rituals could stay up and pray/worship most of the night. In 1573 coffee was introduced to the Europeans. Tea was introduced later in 1657 and became very popular to the people of Europe. Near the end of the 19th century cola products started to appear around the world and became on of the larger drank caffeine drinks.