People say “in the blink of an eye” because it’s the fastest muscle in the body
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25 Crazy Facts About Your Eyes - 0 views
Why Do Some People Have Differently Colored Eyes? - 0 views
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The instance of a person having two differently colored eyes is pretty uncommon, just 11 out of every 1,000 Americans. This uncanny trait is caused by several factors, and can actually develop over time. Iris color develops during the first few months after birth, with the levels of the pigment melanin determining how dark eyes will become. The less melanin expressed in the iris, the lighter a person's eyes look, and vice versa
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Sometimes, though, the concentration and distribution of melanin isn't uniform, which leads to a condition known as heterochromia. This condition can present itself in different ways. There's complete heterochromia, when each eye is a distinctly different color, say, one blue and one brown. Central heterochromia is when the eyes show various colors, such as a blue iris with a golden-brown ring around the pupil. And sectoral heterochromia is when one iris has a splash of color that's different from its overall hue, a trait that actress Kate Bosworth has.
Sleepwalking Causes, Symptoms, and Treatments - 0 views
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It can run in the family. Identical twins are more likely to sleepwalk. If you have a parent, brother, or sister who sleepwalks, you're 10 times more likely to do so than someone from a family with no sleepwalkers.You might also have the disorder if you're:
Why Don't We Sneeze In Our Sleep? - 0 views
How Sleep Works. Sleep for Kids - Teaching Kids the Importance of Sleep - 0 views
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You spend the day running on the playground, learning at school, eating meals, and at night your body and brain get to rest, right? Wrong! In fact, while you are off in dreamland, your body and brain are very busy getting ready for a new day. That is why it is so important to give yourself time to sleep.
Nightmares - 0 views
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Nightmares — like most dreams — occur during the stage of sleep when the brain is very active and sorting through experiences and new information for learning and memory. The vivid images the brain is processing can seem as real as the emotions they might trigger. This part of sleep is known as the rapid eye movement or REM stage because the eyes are rapidly moving beneath closed eyelids. Nightmares tend to happen during the second half of a night's sleep, when REM intervals are longer. When kids awaken from a nightmare, its images are still fresh and can seem real. So it's natural for them to feel afraid and upset and to call out to a parent for comfort. By about preschool age, kids begin to understand that a nightmare is only a dream — and that what's happening isn't real and can't hurt them. But knowing that doesn't prevent them from feeling scared. Even older kids feel frightened when they awaken from a nightmare and may need your reassurance and comfort.
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we have nightmares becuse our brain was active that day and that hapens during the stage of REM (rapid eye movment) when people wake up and remember their nightmare it is normal to be scared. People start realizing by the age of prescho lthat a nightmare is just a dream and that it will not hurt them and that it dosent mean somthing will hapen to them.
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Dreams. Sleep for Kids - Teaching Kids the Importance of Sleep - 0 views
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Everybody dreams every night. But you don't always remember your dreams. People dream during the stage of sleep called Rapid Eye Movement or R.E.M. You spend about two and a half hours dreaming. Most of your dreaming sleep happens between 4:00 and 7:00 in the morning. Scientists are not sure why we dream or what we dream. They do know that R.E.M. sleep is important for learning and memory. TV shows, video and computer games, real people, and actual events can show up in your dreams. Your dreams may be related to how you feel, your worries, your hopes, or things you are excited about.
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All people dream you may no always remember your dream when you are in REM (standsfor rapid eye movment) and you wake up ou mayy remember your dream you dream abaut people often dream during 4:00 to 7:00
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Five Stages Of Sleep ... Sleep Cycles Explained - 2 views
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Stage 1This is the lightest stage of sleep, the transition phase, where you feel yourself drifting off. If you were to forget about the alarm clock and allow yourself to wake up naturally, Stage 1 sleep would be the last stage before you fully wake up. You don't spend too much time in Stage 1 sleep, typically five to 10 minutes, just enough to allow your body to slow down and your muscles to relax.
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The stage 1 of sleep is when you are starting to relax your muscles and start to sleep. This stages is not very long it is about 5 to ten minutes. This stage is when you wake up more quickly for example if someone touches you you will easily wake up.
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Stage 2The second stage of sleep is still considered light sleep. Your brain activity starts to slow down, as well as your heart rate and breathing. Your body temperature falls a little and you're beginning to reach a state of total relaxation in preparation for the deeper sleep to come.
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Stage 3Stage 3 sleep is the start of deep sleep, also known as slow wave sleep. During stage 3, your brain waves are slow "delta waves," although there may still be short bursts of faster of brain activity (also known as beta-waves). If you were to get awakened suddenly during this stage, you would be groggy and confused, and find it difficult to focus at first.
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this stage is when your body is finishing to relax and example is: if someone trys to wake you up you would be confused and do not know what is happening because you were already finishing to completely relax
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Nightmares - 1 views
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While you sleep, your brain doesn't just turn off. It goes through several sleep stages, including REM (rapid eye movement) sleep. Why do they call it that? Because during this stage of sleep, your eyes move back and forth under your closed eyelids. During REM sleep, you have dreams and sometimes those dreams can be scary or upsetting. About every 90 minutes your brain switches between non-REM sleep and REM sleep. The amount of time spent in REM sleep increases with each sleep cycle through the night. The longest periods of REM sleep occur towards morning. If you wake during this REM stage, it is easier for you to remember what you were dreaming about. That's why your most vivid dreams — and nightmares — occur in the early morning hours.
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People have nightmares because when you are in REM (that stand for rapid eye movement) is when you are starting to have dreams and sumetimes the dreams are upseting thats why they are called nightmares
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and evry 90 minutes youre brain desides to go to REM then without REM
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Kids Corner - Why Do We Dream - 0 views
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When we sleep, we lose consciousness of ourselves. We do not know what happens to us or even our body. But our subconscious mind still keeps on working. Depending upon our desires, thoughts and events, we see them as dreams. Thus, your mind works in such a way that it fulfils whatever you desire. Sometimes dreams have helped great scientists to make brilliant discoveries. Sometimes, people come to know about their future when they are dreaming. How that happens ? nobody knows. Usually, dreams are pleasant. However, sometimes they may be frightening causing nightmares. But they are only our frightened fears and emotions that take form of pictures. So do not be afraid, there are no monsters lurking there. And finally, the art of daydreaming that we all know. The ultimate way of dreaming with our eyes open: - that is our own dream world where no trespassers are allowed.
Why We Dream, And What Happens When We Do | Psychology Today - 0 views
Dream - Wikipedia, the free encyclopedia - 0 views
Sleepwalking - 2 views
Sleepwalking - 0 views
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Hours after bedtime, do you find your little one wandering the hall looking dazed and confused? If you have a sleepwalking child, you're not alone. It can be unnerving to see, but sleepwalking is very common in kids and most sleepwalkers only do so occasionally and outgrow it by the teen years. Still, some simple steps can keep your young sleepwalker safe while traipsing about. Despite its name, sleepwalking (also called somnambulism) actually involves more than just walking. Sleepwalking behaviors can range from harmless (sitting up), to potentially dangerous (wandering outside), to just inappropriate (kids may even open a closet door and pee inside). No matter what kids do during sleepwalking episodes, though, it's unlikely that they'll remember ever having done it! As we sleep, our brains pass through five stages of sleep — stages 1, 2, 3, 4, and REM (rapid eye movement) sleep. Together, these stages make up a sleep cycle. One complete sleep cycle lasts about 90 to 100 minutes. So a person experiences about four or five sleep cycles during an average night's sleep. Sleepwalking most often occurs during the deeper sleep of stages 3 and 4. During these stages, it's more difficult to wake someone up, and when awakened, a person may feel groggy and disoriented for a few minutes. Kids tend to sleepwalk within an hour or two of falling asleep and may walk around for anywhere from a few seconds to 30 minutes.
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sleepwalking can be dangeros becacause you can go outside and do dangerous thing. sleepwalking happens when youre in stage 3 or 4 kids can sleep walk dor second to 30 minutes
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