Experts say it is a myth that older adults do not need as much sleep as they did when they were younger. Studies show at least seven hours a night of sleep is critical to brain health and cognitive health. If you consistently wake up several times during the night and still wake up early every day, it may be time to make changes to your nightly routine. The Centers for Disease Control and Prevention (CDC) reports due to sleep disturbances that frequently come with age, many seniors get less REM sleep. REM is an important cycle in our sleep and includes the period in which we dream. It is also believed to help consolidate memory. In addition, during our deep sleep cycle, the brain purges toxins and waste products including amyloid beta, which can gradually clump together to form amyloid plaques, found in individuals with Alzheimer’s disease. A chronic lack of sleep can affect a person’s mood. The magazine, Frontiers in Physiology , published a report citing 6 studies showing less than 7...