Coffee

I´ve just read that today is the International Coffee Day. As usual, there are a lot of studies concerning this drink. Apart from people socializing over a cup of coffee it is also widely known to be used for by students to keep themselves awake while studying at night.
But, other than that, Coffee helps us actívate ourthe brain and improve our concentration. That is the reason why it is advisable for those who havewith mentally demanding professions to have a coffee before going to work.
Other studies claim that taking a painkiller along with drinking coffee can relieve a headache after six hours. For that purpose, I think an aspirin would be fastest acting painkiller to take.
On the other hand, other people believe that coffee this drink makes them nervous, and that it is very difficult for them to sleep if they have it at night.
Anyway, this these studies should be taken with a pinch of salt, since they are often not very reliable.