Gu Bing, a 33-year-old creative director at a digital agency in Shanghai, often works late and considers going to sleep before 0200 an early night. “Even though I am tired the next day, I don’t want to sleep early,” she says. Gu loved late nights in her 20s, but has started to think about adopting more “normal” sleeping habits. Yet her friends are often also awake in the middle of the night. “I really need that time. I want to be healthy but they [her employers] stole my time. I want to steal back my time.”