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3 weeks ago

Take A Look At These Whitening Teeth Tips

White teeth show that someone is healthy and they are also beautiful. You definitely want to look and feel as good as humanly possible. This article gives you ways to do this through whiter teeth. Enjoy your whiter, brighter, and more beautiful smile!

No matter what whitening product you apply, always read the instructions and be diligent about following them. This can irritate your gums and cause damage to your teeth. Only use these products as the packaging recommends, and never longer than stated.

You are going to need to make every effort to both brush and floss twice a day. Plaque is the number one cause of discoloration, and flossing is the best

2 months ago

Excellent College Advice That Gets You On Track

Are you going back to college? When were you in school last? Do you need help? No matter who you are or what your goals entail, this article is sure to prove useful. You can return to school. You will be able to reach your goals this way. Keep reading to find out what you should know. You're deserving!

One thing you must bring to school, that is often overlooked, is plenty of toiletries. You might run out of them very fast. Shop around for good deals by buying in bulk from outlet stores when possible.

Always have a bottle of water with you at school. It is vital that you drink enough water. This is very important if you're going to a lo

3 months ago

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4 months ago

The Science Of Sleep - CBS News



This segment was originally broadcast on March 13, 2008. It was updated on June 12, 2008.

Human beings spend on average one third of our lives asleep. We know we need to sleep, but most of us have never really given a whole lot of thought to why.

Why do we spend seven or eight hours a https://www.healthcare.gov/center/ night immobile and unconscious? What really happens inside our brains and bodies while we're sleeping?

As correspondent Lesley Stahl first reported this spring, it's one of the biggest unanswered questions in all of science, which is why researchers all over the country are doing studies, and coming up with some new, intriguing discoveries.

"We don't sleep just to rest our tired bodies?" Stahl asks Matthew Walker, the director of the Sleep and Neuroimaging Lab at the University of California, Berkeley.

"Well, that's been one of the long-standing theories. But I think what we're starting to understand is that sleep serves a whole constellation of functions, plural," Walker explains.

One thing that's clear, says Walker, is that sleep is critical. In a series of studies done back in the 1980s, rats were kept awake indefinitely. After just five days, they started dying.

Walker says they started dying from sleep deprivation. "In fact, sleep is as essential as food because they will die just about as quick from food deprivation as sleep deprivation. So, it's that necessary," he says.

And it's not just rats: every animal studied so far needs sleep, from the elephant right down to the fruit fly. But that's as far as the similarities go. Some animals sleep 20 hours a day, others only two or three. And still others sleep with half their brains at a time, all making it hard to figure out what exactly it is about sleep that makes it so essential, and that, in terms of evolution, makes it worth the risks.

"You wonder why we developed this if survival is the whole point. Because you're completely vulnerable when you're lying there," Stahl points out.

"Whatever the function of sleep, or the functions of sleep are, they seem to be so important that evolution is willing to put us in that place of potential danger by losing consciousness. It would be the biggest evolutionary mistake if sleep does not healthcare advertising and promotion serve some critical function," Walker says.

One of the most exciting new discoveries in the field of sleep research involves learning and memory.

Five college students were subjects in one of Walker's studies, and they had been awake for more than 24 hours. He has found that students like these do 40 percent worse memorizing lists of words after a night without sleep. But he has discovered something far more revolutionary about what happens when we do sleep.

"Sleep, we've been finding, actually can enhance your memories, so that you'll come back the next day even better than where you were the day before," Walker tells Stahl.

To prove it, Walker put Stahl through a test he's given to more than 400 study subjects. Stahl had to type a series of numbers - 4, 1, 3, 2, 4 - over and over again with her left hand, making a new physical memory.

7 months ago

Make Your Smile Fantastic With These Dental Care Tips

Your teeth make a huge first impression on people. This is just one reason you should keep your teeth in good shape. This article will provide you with some tips on dental care which will get your teeth in the best condition ever.

If you're seeing blood when you are trying to brush your teeth, you probably should make an appointment to see your dentist. Don't ignore the most common sign of gum disease -- bleeding, painful gums. Gum disease can cause bones loss, tooth loss, infections, and diabetes.

Consider trying dental cleaners on teeth in order to boost your dental health. These are usually disposable brushes used to clean between brushings, and you can also use them to clea

7 months ago

A Short Painful History of Dentistry

Judging from what archaeologists have learned from examining the bones and teeth of long-dead humans, people have been bothered by dental problems for thousands of years. Simply put, many of these ancient folk had holes in their teeth and probably suffered from toothaches and also abscesses, whose pain can be excruciating. At least in some places, they did what they could. Evidence of the use of dental drills has been found in Neolithic graves in Pakistan. (The Neolithic Age lasted from 12,000 to 5,000 years ago.) But whether this procedure brought relief to anyone is open to conjecture, of course.

The earliest writing regarding toothaches took place about 5,000 years ago in Mesopotam