Caffeine

Caffeine stimulates the nervous system, increasing alertness and acts by blocking adenosine receptors. 

​

Its effect appears between twenty-five and forty-five minutes after ingestion and lasts between three and seven hours.   In addition, the duration of the effect increases with age.

​

The effect of caffeine depends on the time it is consumed, the amount and the habit of taking it.

​ ​

Even if you can sleep after drinking coffee, it has been observed that sleep remains in the most superficial states, so the quality of sleep is affected.

​

It is not recommended to stop consuming caffeine suddenly.