The Chinese also practice the afternoon nap. Lunch break at work in China is two hours: one for eating, one for sleeping. White-collar workers all get this long of a break. As for blue-collar, I don't know if factory workers do, but it certainly applies to shop owners, street vendors, and many moped/tricycle drivers.
Many people, especially shopkeepers and associates, sleep right at work! More than once I headed down to the cellphone store to recharge my minutes, only to remember the time when I found folks sleeping at the counter. Nothing for it but to return a little later.
Another popular way to sleep is to stretch out atop the seat and handlebars of one's e-bike (electric moped). Must be more comfortable than it looks.
