Westerners sleep more than people from Eastern nations

EARLY RISERS  Sleep schedules vary from country to country, with social demands like work and study providing the primary incentives to stay up (sleep times shown above in darker blue).

J.C. Lo et al/Frontiers in Neurology 2014, adapted by S. Egts

People in Western nations tend to sleep more: seven to eight hours per night on average, compared with less than seven hours in many Eastern nations.