The Importance of Sleep
People are well aware that they feel better — and more productive and focused — after a good night of sleep. They’re also aware that a lack of sleep can increase the risk for a host of diseases and disorders, from heart disease to high blood pressure and diabetes to depression and obesity.
Researchers, however, are still learning about the many vital processes that happen during a good night of sleep. They’re discovering that, far from the passive state it was once thought to be, sleep is a highly active process. It involves brain activity and other biological changes that make it crucial for health. It’s also important for growth and healing, and may be key to improving our ability to fight off illness, fend off fatigue and improve exercise performance.
In addition to its restorative effects, sleep also affects how we function during the day and influences our mood and ability to learn and work. That’s why experts recommend aiming for 7 to 9 hours of sleep per night.
Sleep is also a time when we can consolidate and strengthen memories. This is one of the reasons you may remember something you learned during the day later — or, as scientists recently discovered in the journal Science Advances, that you might be more creative when you get a good night’s sleep before you pick up the paintbrushes or pen. Scientists aren’t sure exactly how this happens, but they know that during REM (rapid eye movements) sleep, the thalamus relays images and sounds to the cortex of the brain, triggering emotions, thoughts and memories.
Getting enough sleep also boosts the body’s immune system. It reduces inflammation, lowers levels of inflammatory proteins such as C-reactive protein, and enhances the immune system’s response to vaccines. It also helps the body fight infections and heal wounds. This is why it’s so important to get a good night of sleep when you’re sick.
Despite its importance, few people get the amount of sleep they need on a regular basis. In fact, research shows that people who consistently don’t get adequate amounts of sleep are more likely to suffer from conditions such as obesity, high blood pressure and depression. The good news is that there are many things you can do to help ensure you’re getting the sleep you need, such as maintaining a regular sleep schedule and making sure you have a comfortable bed and a quiet room. In addition, eating a balanced diet and exercising regularly can further help prevent sleep problems. For more information, check out our article on how to get a better night’s sleep. You can also contact your doctor for advice or to determine if you have a sleep disorder. They can help you find a treatment plan to meet your needs.