There is a time for many words, and there is also a time for sleep.  Homer, the Odyssey

Modern life doesn't feel well adapted to having a siesta.  Even if I'm happily asleep in the afternoon, most of those who I might communicate or interact with are likely to be busily in the heart of their work days.  Is being tempted to sleep a bit after lunch more a sign of age, infirmity, lack of adequate night time sleep or possibly excessive alcohol with my meal.  Or is sleeping in the afternoon a skilful response to our natural circadian rhythms and a solidarity with much of the animal kingdom who regularly sleep at some stage during the day ... for example, male lions sleep for 18-20 hours daily!