We've seen plenty of new sleep hacks lately. But every now and then, it's important to look back at tricks that have stood the test of time for a restful routine. And Japanese sleep secrets are where ...

Often described as one of the world’s most sleep-deprived nations, Japan repeatedly ranks last, or near last, in international surveys and studies on sleep duration and quality. One design firm has ...

Japanese Prime Minister Sanae Takaichi's minimal sleep schedule, reportedly two to four hours nightly, has sparked ...