How does Sleep Increase Your Energy Level
Scientists divide sleep into two major types: REM (rapid eye movement) sleep or dreaming sleep, and non-REM or quiet sleep. Surprisingly, they are as different from each other as each one is from waking— yet both may be important for energy.
Sleep Renew and repair body
Non-REM sleep involves three stages. Sleep specialists believe that the last of them—known as deep sleep or slow-wave sleep—is the main time when your body renews and repairs itself. This stage of sleep appears to be the one that plays the greatest role in energy, enhancing your ability to make ATP, the body’s energy molecule. In deep sleep, blood flow is directed less toward your brain, which cools measurably. At the beginning of this stage, the pituitary gland releases a pulse of growth hormone that stimulates tissue growth and muscle repair.
Sleep improves Immune System
Researchers have also detected increased blood levels of substances that activate your immune system, raising the possibility that deep sleep helps prepare the body to defend itself against infection.
Sleep Energize
Someone whose deep sleep is restricted will wake up feeling less refreshed than a person who got adequate deep sleep. When a sleep-deprived person gets some sleep, he or she will pass quickly through the lighter sleep stages into the deeper stages and spend a greater proportion of time there, suggesting that deep sleep fills an essential role in a person’s optimal functioning.
Sleep Improve memory power
Just as deep sleep restores your body, scientists believe that REM sleep restores your mind, perhaps in part by helping clear out irrelevant information. Studies of students’ ability to solve a complex puzzle involving abstract shapes suggest that the brain processes information overnight; students who got a good night’s sleep after seeing the puzzle fared much better than those asked to solve the puzzle immediately. Other studies, from Harvard Medical School and elsewhere, have found that REM sleep facilitates learning and memory. People who were tested to measure how well they had learned a new task improved their scores after a night’s sleep. If they were prevented from having REM sleep, the improvements were lost. By contrast, if they were awakened an equal number of times from deep sleep, the improvements in the scores were unaffected.
There is also emerging evidence that getting enough REM sleep may help to preserve memory and cognitive function as you age.
Effect of Poor Sleep
Beyond making you feel tired when you wake up, poor sleep quality can make you feel lethargic throughout the day. For example, poor sleep quality has been linked to obesity and weight gain, and not getting enough sleep is also associated with an increase in calorie intake without any increase in activity level. Obesity and its associated health problems, such as heart disease and diabetes, can lower your energy level by making you feel fatigued during the day. Finally, a poor night of sleep can impact your immune system, making you more vulnerable to colds and flu and lowering your energy levels for days at a time.
How to Boost Sleep quality
If you find yourself feeling less than satisfied with your sleep, there are measures you can take to improve your sleep experience. Fresh bedding, low noise levels, and cool temperatures in your bedroom all contribute to a more satisfying sleep experience. By taking steps to increase your sleep quality, you can wake up feeling refreshed with consistently high energy levels throughout the day.
Source : Harvard Health Publishing
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