How do I improve the quality of my sleep?

Experts recommend an average of seven to nine hours of total sleep per night, but you also want your brain to reach a stage called deep sleep. During this stage, the brain creates and stores new memories, makes a hormone that helps tissues grow and regenerate, and “flushes out” toxins and waste products that have accumulated during the day. One can take several steps to improve sleep quality, including going to bed and waking up at the same time each day; avoiding mobile phone use, exercise, or caffeine intake too close to bedtime; and using a noise machine to increase deep sleep.