To fit a few more destinations into your trip, check if any of your must-see museums have late-night hours.

But the main factor is the growing shortage of casual staff - a big issue after four years of robust economic growth - that makes it hard to operate profitably during late-night hours.

According to Redelmeier, screenwriters are more apt to lead unhealthy lifestyles, meaning they smoke more, exercise less, and work a lot of late-night hours, which translates into not enough sleep.