Horseshoe crab dropped into sloped cage far from its

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Horseshoe crab dropped into sloped cage far from its home shores o It will scramble up the floor of the cage as tide is rising on its home shores o It’ll skitter down the cage when the ride is falling and water receding miles away Body clock – people in a bunker wake up a little later every day (~15 min) & drift all the way around the clock o Proof that they are working on their own internal clocks rather than sensing day outside People near the equator have 12 hours of daylight and 12 hours of darkness o People up north near Arctic experience perpetual daylight in summer & 24 hours of darkness in winter When people live w/o any artificial light, they sleep twice every night o They go to bed around 8 pm until midnight & around 2 am until sunrise o In between, they have a sort of meditative quiet in bed There is a surge of prolactin which is not seen in modern day o People in the study report feeling so awake in the study that they realize they are experiencing true wakefulness for the first time in their lives Modern day is a culture of jet lag, global travel, 24-hour business – this causes consequences for our sleep ABCs of ZZZs Few people recognize important of adequate rest or are aware of methods for preventing sleep problems o People suffering from sleep apnea at risk for high BP, heart attacks, stroke, and motor vehicle crashes o Sleepiness has been found to be a significant predictor of absenteeism Most healthy adults need 7 to 9 hours of sleep a night – need for sleep does NOT decline w/ age Getting sleep w/o interruptions from environment or from internal factors is more likely to maintain your sleep Stress is number one cause of short-term sleeping difficulties – sleep problem disappears after stress passes Avoid caffeine, nicotine, and alcohol in late afternoon and evening – exercise regularly o Don’t use your bed for anything other than sleep or sex o Don’t nap during day – affects your ability to sleep at night o Establish a regular and relaxing bedtime routing to allow you to unwind If you can’t sleep after 30 minutes, get up and involve yourself in a relaxing activity Doctor visit is most helpful if you keep a diary of your sleep habits for about 10 days o Lifestyle changes may be recommended if you have trouble falling or staying asleep
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o Treating insomnia w/ medication is most common treatment for sleep problems
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