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Why do we sleep

Why do we sleep . BY: Chyanna Turner. H ow Much S leep D o W e N eed .

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Why do we sleep

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  1. Why do we sleep BY: Chyanna Turner

  2. How Much Sleep Do We Need • When you’re scrambling to meet the demands of modern life, cutting back on sleep can seem like the only answer. How else are you going to get through your never-ending to-do list or make time for a little fun? Sure, a solid eight hours sounds great, but who can afford to spend so much time sleeping? The truth is you can’t afford not to. • Sleep consists of a series of distinct cycles and stages that restore and refresh your body and mind. Even minimal sleep loss takes a toll on your mood, energy, efficiency, and ability to handle stress. If you want to feel your best, stay healthy, and perform up to your potential, sleep is a necessity, not a luxury. Learn what happens when you’re sleeping, how to determine your nightly sleep needs, and what you can do to bounce back from chronic sleep loss and get on a healthy sleep schedule.

  3. The Sleep Wake Cycle • Your internal 24-hour sleep-wake cycle, otherwise known as biological clock or circadian rhythm, is regulated by processes in the brain that respond to how long you’ve been awake and the changes between light and dark. At night, your body responds to the loss of daylight by producing melatonin, a hormone that makes you sleepy. During the day, sunlight triggers the brain to inhibit melatonin production so you feel awake and alert. • This sleep-wake cycle can be disrupted by factors such as nightshift work, traveling across time zones, or irregular sleeping patterns, leaving you feeling groggy, disoriented, and sleepy at inconvenient times. The production of melatonin can also be thrown off when you’re deprived of sunlight during the day or exposed to too much artificial light at night, disrupting the sleep-wake cycle and preventing you from getting the sleep you need. 

  4. How many hours of sleep do you need • According to the National Institutes of Health, the average adult sleeps less than 7 hours per night. In today’s fast-paced society, 6 or 7 hours of sleep may sound pretty good. In reality, it’s a recipe for chronic sleep deprivation. • most healthy adults need between 7.5 to 9 hours of sleep per night to function at their best.

  5. Signs And Symptoms • How is it possible to be sleep deprived without knowing it? Most of the signs of sleep deprivation are much more subtle than falling face first into your dinner plate. Furthermore, if you’ve made a habit of skimping on sleep, you may not even remember what it feels like to be wide-awake, fully alert, and firing on all cylinders. It feels normal to get sleepy when you’re in a boring meeting, struggle through the afternoon slump, or doze off after dinner. But the truth is that it’s only “normal” if you’re sleep deprived.

  6. These Are The Stages • Stage N1 (Transition to sleep) – This stage lasts about five minutes. Eyes move slowly under the eyelids, muscle activity slows down, and you are easily awakened. • Stage N2 (Light sleep) – This is the first stage of true sleep, lasting from 10 to 25 minutes. Eye movement stops, heart rate slows, and body temperature decreases. • Stage N3 (Deep sleep) – You’re difficult to awaken, and if you are awakened, you do not adjust immediately and often feel groggy and disoriented for several minutes. In this deepest stage of sleep, brain waves are extremely slow. Blood flow is directed away from the brain and towards the muscles, restoring physical energy.

  7. Average Sleep Needs • AgeHours Newborns (0-2 months) • 12 - 18 • Infants (3 months to 1 year) • 14 - 15 • Toddlers (1 to 3 years) • 12 - 14 • Preschoolers (3 to 5 years) • 11 - 13 • School-aged children (5 to 12 years) • 10 - 11 • Teens and preteens (12 to 18 years) • 8.5 - 10 • Adults (18+) • 7.5 - 9

  8. Look at this dummy

  9. Why Do You Need To Sleep • We need sleep so our bodies can take a break. Our eyes and brain probably work the most, and our eyes are on all day unless we sleep. We can sit down and our muscles can take a break, but our eyes don't because we stay awake and still want to see things. Plus, no sleep can make people very irritable. people may also get headaches and feel sick even if you try the brain will still force you to sleep but if you drink coffee it contains caffeine which is helping the brain stimulate your basically giving it a red bull

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