It's what wakes us up every day or keeps us focused. This is what pushes us to go the extra mile. Caffeine is a product used in all kinds of drinks, from colas to our early morning cup of tea. Most people whose lives are always at an ever-changing pace of work find it necessary to keep going, people ranging from bcig businessmen to mare students. The main reason for this review is to see how much caffeine affects an average student's life both negatively and positively and also to provide a broader understanding of how it actually works when we consume it, as well as of what it produces. :Caffeine in its pure form is a drug that affects the nervous system, just as amphadamines, coccaine or heroin stimulate the brain in disguise in our modern lifestyle (Horne JA, Reiner LA (1996)). It has become a drink. which people start to depend on without really realizing the effect of this drug. The side effects would be very dangerous and could range from stress to blood clots to heart attacks. Let's start with what it does when it enters our body. Why does a cup of coffee in the morning help you wake up? Well, after drinking coffee, it passes from the stomach to the bloodstream and goes to the brain. In the brain is a chemical called Adenosine, this is the chemical in your trash that is responsible for making you sleepy. It does this by attaching to nerve cells in the brain and slowing them down. Caffeine has the same molecular structure as adenosines. Nerve cells in the brain absorb this caffeine instead of adenosine and prevent them from slowing the formation of nerve cells.... middle of paper ...... driver acting drowsiness: effects of napping, caffeine and placebo. Psychophysiology 33: 306-309 Ruxton, C... (2009). Health aspects of caffeine: benefits and risks. Nursing Standard, 24(9), 41-8; quiz 50. Retrieved July 23, 2010 from Career and Technical Education. (Document ID: 1900380331Carol A Knight, Ian Knight and Diane C Mitchell. (2006). Caffeine consumption in beverages among young children in Canada and the United States. Canadian Journal of Dietetic Practice and Research, 67( 2), 969. Accessed July 23, 2010. , from ProQuest Health and Medical Complete (DocumentID: 1062756611). Bette Caan, Charles P Quesenberry and Ashley O Coates (1998 -4). and Medical Complete (Document ID.: 26901125).