Archive for August, 2011
Tanning is dangerous. Most people know this, yet why is it continuously something many cannot avoid? It has been known for a long time that UV rays damage DNA and can lead to skin cancer, including melanoma, premature aging and wrinkles. 120,000 new melanoma cases are diagnosed every year. A 2005 study showed that 92% of people knew the sun was dangerous but 62% of them still loved to tan. Over 30 million Americans visit tanning salons, as much as 1 million a day. 70% of them are women between the ages of 16 and 49.
Tanning is dangerous because it More >
Do you know people who swear that they can live on a few hours of sleep a night and be able to fully function the next day? Perhaps you’re one of these people. Well it seems that you really can’t “fully function” on less sleep.
Researchers at the University of Wisconsin- Madison conducted tests with rats that were kept up past their normal bedtime. The rats were given objects to play with to keep them awake. During play, electrodes were implanted in their brains to measure brain activity. The results were interesting.
It seems that sleep does not involve the whole brain at once. More >