![]() Does your need for sleep change with age? You’ll find answers to some common questions about sleep below. Ideally, you want to wake up at the end of a sleep cycle instead of in the middle of it - that’s because you’ll typically feel more refreshed and energized if you wake up at the end of a cycle. Completing five cycles a night means you’d get 7.5 hours of sleep, while six full cycles translates to about 9 hours of sleep. It takes, on average, about 90 minutes to go through each cycle. REM sleep helps boost your mental and physical performance when you wake up. During REM sleep, your brain is most active, dreams occur, and your eyes move back and forth rapidly under your eyelids. This final stage takes up about 25 percent of your sleep cycle. During this deepest and most restorative sleep stage, breathing slows, blood pressure drops, muscles relax, hormones are released, healing occurs, and your body becomes re-energized. Your body temperature drops slightly, and your breathing and heart rate become regular. The onset of sleep begins at this stage, as you become unaware of your surroundings. This first stage of sleep marks the period between being awake and falling asleep. The stages used to be classified as stages 1, 2, 3, 4, and REM. The last stage is rapid eye movement (REM) sleep.The first three stages are part of non-rapid eye movement (NREM) sleep. ![]() Each cycle includes four distinct stages. When you fall asleep, your brain and body go through several cycles of sleep. changes in judgment and impulse control.declining performance at work or school.Research has found evidence to suggest that sleep deprivation negatively affects functions associated with the brain’s frontal lobe, including: As a result, you’ll likely have trouble concentrating and remembering things after a night of poor sleep. When you don’t get enough sleep, your brain can’t work as efficiently. attention deficit hyperactivity disorder (ADHD).Sleep deprivation has also been linked to symptoms of some mental health conditions, including: ![]() Research also suggests that sleep deprivation can worsen mental health symptoms, including depression, anxiety, paranoia, and hallucinations.
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