Caffeine

Caffeine, a psychoactive drug, is a central nervous system stimulant (Majithia, 2007). It stimulates the brain by blocking the effects of the adenosine, which is a neurotransmitter that relaxes the brain. Caffeine helps a person stay awake by connecting to adenosine receptors in the brain without activating them (Petre, 2011). This blocks the effects of adenosine, leading to reduced tiredness. Caffeine consumption is also very popular among students; they have become dependent on it in order to…

Introduction: Caffeine is the most widely used drug in the world. Humans thrive off of caffeine and its effects by drinking coffees, teas, and sodas. Used for its addictive stimulating nature, caffeine is said to alleviate the morning grogginess, increase alertness, and also improve memory and focus. This stimulant is one that some humans truly can’t live without, but why is that? Adenosine, a depressant hormone responsible for sleep regulation and decreased nerve activity, is constantly…

favour of the alternative hypothesis stating that acute caffeine consumption does not increase heart and respiratory rate, and therefore does not elevate aerobic performance. These results are not consistent however with related research that asserts caffeine as a stimulant that physiologically affects the respiratory and cardiovascular systems (Rogers and Dinges, 2005). Rogers and Dinges (2005) studied the physiological implications of caffeine in both men and women athletes with a particular…

Caffeine, one of the most commonly used psychoactive drugs, is a central nervous system stimulant that induces the sense of alertness and awareness. Inspired by the previous research on how the caffeine affects the cardiovascular system, we wanted to test the effect of different concentrations of caffeine on the heart. We used ECG stimulator on LabScribe 2 software to monitor the heart rate. We used frogs as a test subject, since both frogs and humans have a closed cardiovascular system,…

Caffeine is one of the most loved stimulants, why? Maybe because caffeine is can be easily bought in any store world wide, like coffee and chocolate and also like over the counter medicines that can be bought without a doctor’s consent. In a research published by Sandra Blakeslee it said that caffeine is the most widely used psychoactive substance on earth, said Dr. Solomon Snyder, director of the neurosciences department at Johns Hopkins University in Baltimore. People love caffeine, he said,…

Caffeine is a popular topic of debate throughout the health field. Coffee is the adult population of America’s largest source of caffeine. The United States consumes more coffee than any other nation and is “second only to water as the most widely consumed beverage in the United States. The consumption of coffee in the United has been increasing for the past 2 decades, and today about two thirds of American adults drink coffee on a daily basis.” (O’Keefe et. al., 2013, p. 1) Previously,…

Nowadays, caffeine becomes more and more familiar to human. People intake different amount of caffeine from different foods. It becomes part of human’s daily routine. https://www.google.com/search?q=caffeine&espv=2&biw=706&bih=567&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiVmOWn1sHMAhXGuBoKHTGYAbsQ_AUIBigB#imgrc=ya-sLhS2Ae9x2M%3A Caffeine (C8H10 N4O2) a substance that has a bitter taste and is usually found in coffee, tea, soft drinks, chocolate, kola nuts, and certain medicines. It affects body’s…

Coffee is the most common source of caffeine for people worldwide; consequently, overconsumption of coffee has become a concern (Gonzalez de Mejia and Ramirez-Mares 489). Because there is so much confusion about the effect of caffeine on the body, people generally assume that they should limit their consumption. However, recently, extensive research indicates that “coffee consumption may be beneficial” as it reduces the risk of certain cancers, type 2 diabetes, and liver disease (489-90). There…

Caffeine is known as a central nervous system stimulant of the methylxanthine class of psychoactive drugs, as defined in scientific terms. But to many college students and full-time working adults, they would best summarize it as a necessity of life. It is consumed in various forms such as coffee, tea, energy bars, or caffeinated soft drinks. Many use caffeine to help them maintain enough energy to get through a workday (or to deal with chemistry students), which is a big contributor as to why…

Many people drink coffee or caffeine products in order to stay awake. Many people rely on their cup of coffee in the morning or throughout their day in order to function or to perform daily tasks. Rogers et al. (2012) discusses the various functions that caffeine has that can be beneficial and harmful to our psychological and behavioral functioning. This study was interested in comparing the effects of caffeine from those who drink caffeine products regularly with those who do not (Rogers et al.…