This was done to spite the Tea Act, from which heavy taxes were laid on tea imported by Americans. Eventually, the Boston Tea Party was held, in which revolutionaries dumped a large quantity of tea cargo from a boat into the Boston Harbor in protest of the high tax placed on tea. The world's first caffeinated soft drinks were created in the 1880's. In its natural form, caffeine tastes very bitter, but most caffeinated drinks have gone through enough processing to camouflage the bitter taste. Most teens get the majority of their caffeine intake through soft drinks, which can also have added sugar and artificial flavors.
Caffeine affects everyone in similar ways.
Like all stimulants, caffeine raises blood pressure and its effects range from mild alertness to heightened anxiety and body tension. Regular users who suddenly stop consuming caffeine may experience withdrawal symptoms including drowsiness, headaches, irritability, nausea and vomiting and depression. Although the amounts of caffeine needed to affect each person differ. People who drink caffeine regularly develop a reduced sensitivity and require higher doses of caffeine to achieve the same effects as someone who doesn't consume it regularly. This means that the more caffeine you consume, the more caffeine you need to feel the same effects.