Do you all know what is in coffee???

Coffee makes our morning fresh and energetic. The reason? Caffeine...

Caffeine is a central nervous system stimulant. It's one of the most popular drugs in the world, consumed by up to 90% of people in the world in one form or another, but mostly in beverages.

It is a naturally occurring substance found in plants like cocoa beans, tea leaves, and kola nuts.

Caffeine is a stimulant of the central nervous system (CNS), the cardiac muscle -increases heart rate, and respiratory system -relaxes air passages permitting improved breathing, and allows some muscles to contract more easily. It acts as a diuretic it increases the rate of bodily urine excretion, and delays fatigue -having the effect of warding off drowsiness and restoring alertness. Caffeine is probably the most popular drug in use because of these reasons. The effects that we might notice after consuming a large cup of coffee are hands getting cold, muscles tensing up, feeling of excitement and increased heart beat.

Effects of Caffeine

Caffeine absorption occurs in the body very quickly. It enters the bloodstream through the stomach and small intestine, and its effects are felt as soon as 15 minutes after consumption. It is completely absorbed within 45 minutes of ingestion. Caffeine does not accumulate in the bloodstream no is it stored in the body, but it does persist but only about ½ is eliminated in the urine within 6 hours. 

Caffeine sensitivity refers to the amount of caffeine that will produce negative side effects in a particular person. Regular caffeine consumption reduces sensitivity to caffeine, and a higher intake is needed for the same effects. So caffeine is considered to be an addictive drug. 

When we try to reduce caffeine intake, the body then becomes oversensitive to a chemical in the brain (adenosine) relevant to the sleep process, causing blood pressure to dropdramatically, producing an excess of blood in the head area (not necessarily on the brain), and leading to a headache often lasting several days. Other withdrawal symptoms reported are fatigue and muscle pain, irritability, inability to work, nervousness, restlessness, and feeling sleepy, and in extreme cases, nausea and vomiting.