(iStock)
New guidelines may soon make the disorder known as CKM syndrome a common diagnosis.
By Erica Sloan
(Kentaro Takahashi for The Post)
From puffer jackets designed for power naps to homes that auto-adjust lighting and temperature, better sleep in Japan is a booming market.
By Michelle Lee and Chie Tanaka
Catch up quickly with a rundown of the 7 most important and interesting stories.