Wondering this myself. I remember reading ( not too long ago ) that europeans lived longer and had better mental health because they napped more than americans. Wasn't it even encouraged to take naps at work for better mental function.
Not many people use their siesta to actually nap though anymore: maybe in august when it is 40+ Celcius it goes up but that is a few weeks a year and tourists basically pass out then too from too much booze and food around siesta time.
