The '40-winks' is no doss — it's biologically ordained

Most birds don't hibernate but some do indeed use downtime creatively

Andean Emerald Hummingbird.

Táimse im’ chodhladh is ná dúistear mé (I'm asleep and don't wake me)

Nodding off in the office after lunch has an ancient provenance. Our species evolved in tropical Africa where ‘only mad dogs and Englishmen go out in the midday sun’. The siesta, a legacy, survives in Southern Europe.