In the short term, people who don’t get adequate sleep are more likely than others to have road accidents. As well as impacting concentration and mood, lack of sleep has been linked to a range of conditions such as heart disease, high blood pressure, diabetes and even premature death. Not getting enough sleep can seriously affect a person’s health. What can happen if you don’t get enough sleep? Children and teenagers need more sleep than adults, while older people tend to sleep more lightly and for shorter time spans than when they were younger - despite needing the same amount of sleep as they did as young adults. Most adults need about 8 hours of sleep per night. Sleep promotes attention, memory and learning. It allows for growth and healing, and helps control appetite and weight. Sleep is also thought to help keep the immune system strong and the heart and blood vessels healthy. In short, you need sleep so your body and mind can function properly. Scientists don’t fully understand why humans need so much sleep, but it’s believed to help restore the body physically, as well as organise the brain. Babies spend at least half of the time they’re asleep in REM sleep. Adults usually spend about one-fifth of the night in REM sleep and the remaining four-fifths in non-REM sleep. REM sleep happens about every 90 minutes during the night. REM sleep is when most dreaming occurs and is thought to be important for learning and creating new memories. In REM sleep, your eyes move rapidly, your blood pressure and heart rate go up, and your brain becomes very active. During stages 2, 3 and 4, your eye movements stop, your body temperature drops and you are deeply asleep. During stage 1, you are transitioning between being awake and asleep, and wake easily. When you are in non-REM sleep, you go through 4 stages. If this system is disrupted - such as due to shift work or jet lag - you can experience sleep problems. Your body’s circadian rhythm (or, internal biological ‘clock’) control when you feel sleepy and when you’re typically awake. While your body is mostly still, your brain is quite active. When you are asleep, your eyes are closed, most of your muscles are relaxed and your consciousness is practically suspended. Fortunately, there are many things you can do to improve your sleep. Sleeping problems are common, with up to 4 in 10 Australian adults not getting enough good-quality sleep.
#Average wake up time by country mods
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#Average wake up time by country free
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