Maybe but it's not really that, it's the culture.
During the cold war, there was a Canadian journalist who came to Albania to visit.
Albania back then was like North Korea now. Every foreigner was assigned a secret service agent which follows you.
He noticed that right after lunch all the streets were empty ... because people were sleeping. And they had no drinks either.
So he said "The best time to invade Albania would be during lunch hour because you guys are all sleeping".