Effect of music of specific frequency upon the sleep architecture and electroencephalographic pattern of individuals with delayed sleep latency: A daytime nap study PMC

Exercise can increase the duration and quality of sleep by boosting the production of serotonin in the brain and decreasing levels of cortisol, the stress hormone . It can even be used to improve chronic sleep disorders, such as insomnia . Some studies have shown that regular naps that are long , and late may lead to poor nighttime sleep quality an

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