 Premise is: A lack of sleep can always be remedied later, a Madrile??o might tell you, as he tops off a late night with early-morning chocolate con curros (a fried-dough and chocolate snack ideal for absorbing alcohol) on the way home for a shower and then continues on to work.
Hypothesis is: Madrid has a curfew that states that every citizen needs to be at home after 9PM.