Caffeine video

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Researchers

Researchers have attempted to find out how much caffeine people consume every day. Americans consume about 45 MILLION pounds of caffeine each year. In the United States, coffee drinkers drink an average of 2.6 cups per day. Total caffeine in for coffee drinkers was 363.5 mg per day - this includes caffeine from coffee AND other sources like soft drinks, food and drugs. Non-coffee drinkers even get plenty of caffeine: former coffee drinkers get about 107 mg per day and people who have never had coffee get about 91 mg per day. =)

The effects of Caffeine!

The main effect of caffeine is that it stimulates the central nervous system.With small amounts:
you feel more awake and alert,
your heart beats faster,
you can stay awake longer (if taken before you try to go to sleep),
you make more urine,
your hands shake slightly,
you have a smaller appetite.
With larger amounts, you may:become anxious and restless,have difficulty concentrating,get headaches,have difficulty getting to sleep,become confused.

Caffeine and exams

A small amount of caffeine, such as the caffeine in one cup of coffee or tea, seems to help many people to 'perform' better than having no caffeine. If people usually have a cup of tea or coffee to start the day, they do not manage so well if they miss that drink.
Large amounts of caffeine may make a person feel more awake, or stop them falling asleep, but they cannot study well or do exams better. In fact the anxious feelings due to the caffeine may make them do worse than usual.

The History of caffeine

Caffeine has been used as a stimulant for a very long time. There are records of tea drinking in 2737 BC, coffee drinking in 1000 AD, and milk chocolate bars were being made in the 1800s. There have been worries about the use of caffeine for at least 300 years. The health effects of caffeine have been studied a lot.

The effects of Caffeine!

The main effect of caffeine is that it stimulates the central nervous system.
With small amounts:
you feel more awake and alert,
your heart beats faster,
you can stay awake longer (if taken before you try to go to sleep),
you make more urine,
your hands shake slightly,
you have a smaller appetite.
With larger amounts, you may:
become anxious and restless,
have difficulty concentrating,
get headaches,
have difficulty getting to sleep,
become confused.

What is caffeine????

Caffeine is a chemical found in many different plants from all over the world. Caffeine is a stimulant, which means that it speeds up the brain and the nervous system. Caffeine is considered a drug. Many people take caffeine to get energy.