How Long Can Humans Survive Without Sleep?

How long can you survive without sleep? In fact, one can try to wake up (not sleeping) for 11 consecutive days. But there are few side effects.

In 1964 in California, a high school student 17 years old named Randy Gardner decided not to sleep for 11 days (264 hours), respectively. Research shows, Randy eventually suffer memory problems, paranoia (exaggerated fears) and hallucinations.

Other studies have shown, lack of sleep in mice can lead to Alzheimer's disease. Chronic sleep deprivation can also cause obesity, high blood pressure, depression, and diabetes - both humans and animals.

Sleep helps the brain develop and make connections between brain neurons, enhance the immune system, restore memory, process information and aid in healing the body. According to the National Sleep Foundation poll in 2011, 43 percent of Americans said they rarely or never get enough sleep at night

Meanwhile, 15 percent of adults and 7 percent of 13-18 year olds only sleep less than six hours per day.

So, how much sleep you really need? The researchers say that there is no "compulsory figures", but the women generally sleep longer than men, and baby sleep longer than their parents. Our bodies are actually forcing us to sleep with the addition of a small (called microsleeps) when we are not resting too long.

What about you, what is enough sleep?