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How Sleep Works: Understanding the Science of Sleep Numerous chemicals and hormones are involved in the mechanics of sleep-wake homeostasis and the circadian alerting system Shifting between wakefulness and sleep creates changes in thousands of neurons in the brain and a complex signaling system that generates specific reactions in the body
How to Sleep Better Looking for ways to sleep better? We share the steps you can take to improve sleep hygiene and get more restful sleep each night
Why Do We Need Sleep? - Sleep Foundation Circadian rhythms, including the sleep-wake cycle, operate according to environmental cues Every evening, as darkness sets in, the body begins releasing the sleep hormone melatonin—and every morning, with the arrival of light, the body’s melatonin levels become undetectable
What Is Circadian Rhythm? - Sleep Foundation Perhaps the most well-known circadian rhythm is the sleep-wake cycle, which determines how sleepy or alert you feel throughout the day and night We cover how circadian rhythms work, particularly in connection with sleep, along with how to prevent and address disruptions to your circadian rhythms
Paradoxical Insomnia: The Misperception of Your Sleep State Formerly known as sleep state misperception, paradoxical insomnia is a sleep disorder that causes people to feel awake even while they are asleep, leading them to underestimate how many hours they sleep each night