CONSCIOUSNESS & SLEEP

     How do circadian rhythms work?  Several components make up your body’s circadian rhythm. It is one of four  biological rhythms  in the body. Cells in your body First, cells in your brain respond to light and dark. Your eyes capture such changes in the environment and then send signals to different cells about when it’s time to be sleepy or awake. Those cells then send more signals to other parts of the brain, which activate other functions that make you more tired or alert. Hormones play a role Hormones like  melatonin  and  cortisol  may increase or decrease as part of your circadian rhythm. Melatonin is a hormone that makes you sleepy, and your body releases more of it at night and suppresses it during the day. Cortisol can make you more alert, and your body produces more of it in the morning. Other hormones that  play a role in alertness and circadian rhythm  include: 1.      Vasopressin 2.      Acetylcholine 3.      Insulin 4.      Leptin 5.      Other factors Body temperature

  CIRCADIAN RHYTHM What happens if the human body's biological clock is disrupted? Sleep is critical for humanity because some vital physiological repairs that are required can only be performed while sleeping. The circadian rhythm in the human body is also important for sleep because it is responsible for the secretion of hormone s such as blood pressure regulation, melatonin , and growth hormone. As a result, disrupting this rhythm can cause many diseases. Three important solutions can be implemented to avoid these diseases: not using technological devices before going to bed, avoiding jet lag, and not working night shifts. The first important problem of disturbance of the circadian rhythm is the lights emitted by electronic devices. Because the sun emits blue light in the morning and sends signals to the human body that it is time to wake up. When people look at their phones right before bed, they expose themselves to blue light, which wakes them up. For these reasons, elec

CONSCIOUSNESS AND SLEEP CYCLE Is sleep considered to be a state of consciousness ? Consciousness is a state of mindful wakefulness in which people are aware of themselves, their surroundings and are able to perceive and process stimuli around them. The consciousness of every awake person is clear. Sleeping people, on the other hand, enter a state of altered consciousness because their brains are active even if they are not moving or speaking. As people fall asleep, they go through different stages. And there are three important stages of sleep that a person goes through before and during sleep: NREM, N1-N2-N3, and REM sleep .          NREM is the first stage of sleep, accounting for the majority of sleep. It is divided into three stages, N1, N2, and N3, each with its own characteristic. They differ in terms of sleep depth and also sensory and motor disconnection. During the NREM stages, breathing, heart rate, and blood pressure all gradually decrease. The muscles are not paralyzed