Coffee contains caffeine, which helps us reduce drowsiness. Sleepiness or drowsiness is often chemically induced by adenosine that binds to its receptors in the brain and creates drowsiness. Caffeine is a chemical and it alters the chemical level of our brain making us feel aroused. Firstly, it stimulates up by rushing adrenaline in our blood stream. The next way of arousing our body is by increasing the dopamine level in our brain which is a neuro-transmitter and makes us feel better and roused.
The content of caffeine in coffee also stops the adenosine to bind to its receptors, thus not making the person feel drowsy. Soft drinks also have caffeine and that is why it gives the right taste and upswing when taken. Those who love soft drinks are often seen addicted to the freshness they feel after having them and not their flavour. Coffee wakes you up essentially by reducing the brain activity associated with sleeping.
