Contained in abundance in coffee, tea, chocolate bars, cocoa, cola soft drinks and other energy drinks, caffeine is a stimulant drug that acts on the brain and nervous system by temporarily warding off drowsiness and restoring alertness. It may also be sourced from medications like cough syrup and slimming tablets. Universally consumed recreationally and medically, it reduces physical fatigue. When feeling tired, caffeine intake results in increased wakefulness, rapid flow of thought, increased focus and better general body coordination. The amount of caffeine intake may vary from person to person depending on their age, body size, daily activities and degree of tolerance. Therefore, athletes, pregnant women, aged people and children need to limit their caffeine consumption. With a number of effects on sleep, caffeine improves performance during sleep deprivation but may also cause subsequent insomnia. In athletics, moderate caffeine intake can improve temporary sprint, endurance, stamina and performance. Some studies have shown that coffee does not produce the ergonomic effects observed in other caffeine sources. If consumed in high quantity, caffeine can impair athletes' performance by interfering with coordination. Some evidences also suggest that caffeine may be helpful at high altitude. Small doses of caffeine can make you feel refreshed and more focused. But large doses of caffeine may result in sleeplessness.

Being a drug stimulant, caffeine works on the body in similar ways to the hormone adrenalin located near the kidneys. In case of being frightened or stressed, the adrenal glands squirt adrenalin directly into the bloodstream resulting in increased breathing & heart rate and a short burst of physical energy.

Excessive amount of caffeine may cause:

A rise in body temperature
Dizziness and headaches
Frequent urination and dehydration
An even greater feeling of tiredness after the energy burst
Fast heartbeat (palpitations)
Anxiety and irritability
Restlessness and excitability
Insomnia
Trembling hands

Not to wonder, almost every person around the world starts his morning with a cup of tea or coffee without knowing what amount of caffeine he consumes a day. Too much consumption of caffeine may lead you to several health problems including high blood pressure and also cholesterol level. In every day life, people have much work to do within the limited time. No matter if you are a housewife, student, businessman or even a worker, your life is full of responsibilities and stress. To carry out your daily work, you have to be dependent on tea or coffee as the best medication to reduce our tiredness or fatigue temporarily.

Regular consumption of tea or coffee keeps you at the risk of being sick or addicted. However, there are many beverage and drinks containing caffeine available in the market, but the best alternative to avoid this is Natural juices for energy. It will in fact overtake the need taking tea, coffee or other edibles that contain caffeine in abundance.