Myth adequate sleep will affect the health and beauty has long been known. But the latest study says that the concept is not just a myth. People who have sleep enough, about 8 hours, will look more attractive than people with less sleep.

Research by a team of researchers from the Karolinska Institute, Stockholm, Sweden, proves people who get enough sleep not only look more attractive, but also healthier and fitter. sleep less than that time.

The researchers find that after their faces photographed 23 men and women after they had slept enough and then photographed again after awake for 31 hours. The process of shooting is made in the same standard, such as how close to the camera, do not wear makeup until wajahnay expression.

"People who sleep less visible are not attractive, less healthy and more easily tired than those with adequate rest time,"the researchers wrote in a report published in the British Medical Journal.

Professor of Sleep and Physiology at the Surrey Sleep Research Centre, Derk-Jan Dijk, said the impact of sleep deprivation is much worse than the images obtained in the study because the photo was taken at noon when the body clock is in full consciousness. "Imagine the faces of people in the middle of the night or early morning hours when he asks her to sleep," he said.

Sleeping arrangements are as important as diet and exercise to get a balanced body weight. Concluded a series of studies conducted by experts. The study by a team from the University of Chicago shows, lack of sleep can reduce the effects of the diet. When people who are dieting have quality sleep, reduced body weight two times more than dieters who sleep less.

Reaction of sleep deprivation on obesity was also carried out by scientists from Australia about the link between lack of sleep and weight gain. Meanwhile, experts from Columbia University, New York, who observed sleeping habits of 18,000 people found that people who sleep less than four hours per night were 73 percent risk of overweight later in life than people who sleep 7-9 hours every night.

Even people who average 6 hours sleep per night had a risk of obesity by 23 percent. On the other hand, people are getting too much sleep, about 10 hours every night, has a 11 percent risk of suffering from obesity.

The question is, why lack of sleep makes the body weight increased? The experts believe, lack of sleep can interfere with hormones ghrelin and leptin. Both are hormones that regulate hunger and appetite. When we lack sleep, your body will react like when we eat less; leptin levels will fall and ghrelin levels rise. As a result, the stomach will feel hungry and stimulate appetite to eat a diet rich in fat and sugar. Of course this will make weight soared. These hormonal changes also disrupt the metabolism so more fat is stored.

Other studies have shown, lack of sleep will interfere with the body's biological clock or circadian rhythm that regulates glucose and insulin. Sleep deprivation increases the hormone cortisol, a hormone that also regulates the use of energy in the body. High cortisol levels are associated with insulin resistance and high body mass index.

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