Turkish people have some natural daily habits (as all countries) but one of them that is very well recognized is drinking tea (almost) all the time. In Portugal we can also find out people drinking tea, but undoubtedly the most popular and nationally recognized habit is drinking coffee (specially after meals).
But the most spectacular thing about "turkish çay" is that is healthy and wonderful when you have to recover from a hangover. "Turkish çay" dehydrates all cells of your body and from my personal experience when you feel with a bellyache and you take a "turkish çay" you will get better. I prefer take "turkish çay" with sugar but I've never tried take it without sugar.
I leave you with a video that summarizes everything about "turkish çay". Hope you like it :).