Wednesday, March 16, 2016

How Much Sleep Do You Need


                                            How Much Sleep Do You Need

      **** Most people need about 8½ to more than 9 hours of sleep every night. Getting the right amount of sleep is  nececery for anyone who wants to do well on a test or play sports without stumbling. Unfortunately, though, many  people don't get enough sleep. So every one need to know how much sieep do one need. 

       *** What Reason Man Get Enough Sleep?  

   Until recently, man often got a bad rap for staying up late, oversleeping for school, and falling asleep in class. But recent studies show that adolescent sleep patterns actually differ from those of adults or kids.
Experts say that during the teen years, the body's circadian rhythm (sort of like an internal biological clock) is temporarily reset, telling a person to fall asleep later and wake up later. This change might be due to the fact that the brain hormone melatonin  is produced later at night for teens than it is for kids and adults. This can make it harder for teens to fall asleep early.
Early start times in some schools also might play a role in lost sleep. Teens who fall asleep after midnight may still have to get up early for school, meaning that they might squeeze in only 6 or 7 hours of sleep a night. A few hours of missed sleep a night may not seem like a big deal, but it can create a noticeable sleep deficit over time.
     ****  Why Is Sleep Important?
     sleep deficit affects everything from someone's ability to pay attention in class to his or her mood. According to a National Sleep Foundation Sleep in America poll, more than 25% of high school students fall asleep in class, and experts have tied lost sleep to poorer grades. Lack of sleep also damages teens' ability to do their best in athletics. 

                                             

Slowed responses and dulled concentration from lack of sleep don't just affect school or sports performance, though. More than half of teens surveyed reported that they have driven a car while drowsy over the past year and 15% said they drove drowsy at least once a week. The National Highway Safety Traffic Administration estimates that more than 100,000 accidents, 40,000 injuries, and 1,500 people are killed in the U.S. every year in crashes caused by drivers who are simply tired. Young people under the age of 25 are far more likely to be involved in drowsy driving crashes.
        **** Am I Getting Enough Sleep?
  Some researchers, parents, and teachers have suggested that middle- and high-school classes begin later in the morning to accommodate teens' need for more sleep. Some schools have implemented later start times. You and your friends, parents, and teachers can lobby for later start times at your school, but in the meantime you'll have to make your own adjustments.
                     *****  Here are some things that may help you to sleep better:
  • Don't nap too much. Naps of more than 30 minutes during the day and naps too close to bedtime may keep you from falling asleep later.
  • Avoid all-nighters. Don't wait until the night before a big test to study. Cutting back on sleep the night before a test may mean you perform worse than you would if you'd studied less but got more sleep.
  • Create the right sleeping environment. Studies show that people sleep best in a dark room that is slightly on the cool side. Close your blinds or curtains (and make sure they're heavy enough to block out light) and turn down the thermostat (pile on extra blankets or wear PJs if you're cold). Lots of noise can be a sleep turnoff, too. Use a nature sounds or white-noise machine (or app!) if you need to block out a noisy environment.
  • Wake up with bright light. Bright light in the morning signals your body that it's time to get going. If it's dark in your room, it can help to turn on a light as soon as your alarm goes off.
  • Set a regular bedtime. Going to bed at the same time each night signals to your body that it's time to sleep. Waking up at the same time every day also can help establish sleep patterns. So try to stick as closely as you can to your sleep schedule, even on weekends. Try not to go to sleep more than an hour later or wake up more than 2 to 3 hours later than you do during the week.
  • Exercise regularly. Try not to exercise right before bed, though, as it can rev you up and make it harder to fall asleep. Finish exercising at least 3 hours before bedtime. Many sleep experts believe that exercising in late afternoon may actually help a person sleep.
  • Avoid stimulants. Don't drink beverages with caffeine, such as soda and coffee, after 4 p.m. Nicotine is also a stimulant, so quitting smoking may help you sleep better. And drinking alcohol in the evening can make a person restless.

  

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