6. the body must "sleep quality" refers to a deep sleep means sleeping eight hours a night and wake up to the sofa in the morning, people sleep in the morning and woke up at 3 in the afternoon. This is one more advantage.
6. body "Sleep quality" means sleep. Mean sleep eight hours Mean sleep at night and wake up in the morning, people who sleep and wake up in the morning, afternoon, this is a lie that has little benefit.
6. The body to "sleep quality sleep" mean mean mean sleep eight hours of sleep, in the middle of the night and wake up in the morning, people who sleep in the morning. And wake up in the afternoon. This is the sleep benefit less.