Caffeine is a substance known for its activating effect in our body, especially in our brain. It causes adrenaline rush, thus making us feel awake and not tired. Caffeine is found in coffee, tea, chocolate, and in many sodas and colas. Many of us like taking in these drinks more than we should, and some of us may have already developed an addiction for caffeine because of this.
Too much caffeine has its side effects – faitgue and headache.
But withdrawing from caffeine also has the same result.