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what is stage one sleep
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if we took a measurement of your brain's
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electrical activity
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while you're awake we would see a
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jumbled looking pattern of squiggles
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that would contain around 12 and 30
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waves of electricity per second
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however once you're in bed and starting
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to relax
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your brain activity slows down to around
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8 to 12 waves each second this kind of
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brain activity is called alpha activity
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and it's associated with relaxation and
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meditation
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after a few minutes your breathing would
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start to slow your eyes would start to
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roll from side to side and the frequency
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of your brain waves will become even
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lower and slower
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now between maybe three and seven brain
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waves every second
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so we call this kind of brain activity
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theta activity
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at this point your muscles also start to
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relax and your thoughts will start to
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loosen up becoming a bit more random
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and this is stage one of sleep
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stage 1 sleep is very brief it's around
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5 minutes
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if we woke you up from sleep during this
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stage you are likely to feel like you
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weren't really asleep
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a couple of weird things can happen
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during stage 1 sleep
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the first are hypnagogic hallucinations
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or sleep hallucinations
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their sensations like noises say loud
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bangs
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visual phenomenon like people animals or
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objects that seem very real but they're
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just hallucinations
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the second phenomenon is a hypnagogic or
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myoclonic jerk
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which is the sensation that you're
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falling before you experience an entire
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body jolt that wakes you up
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around about 70 of people experience
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these jerks
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and they seem to be associated with
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being exhausted or possibly sleeping in
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an uncomfortable position
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the main thing to know though is there's
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nothing to panic about they're pretty
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normal lots of people experience them