Here are some sleep fun facts…
- Humans spend a third of their life sleeping (25 years or more).
- Humans can survive longer without food than they can without sleep.
- During the first two years of a baby’s life, new parents will miss six months of sleep on average.
- Giraffes sleep only 1.9 hours a day in five- to 10-minute sessions. Koalas, however, are the longest-sleeping mammals, sleeping up to 22 hours a day.
- Only one half of a dolphins brain goes to sleep at a time. Dolphins are capable of what is known as uni-hemispheric sleep, in which one hemisphere of the brain goes into a deep sleep while the other hemisphere remains awake. This allows dolphins to sleep under water without drowning.
- Heart disease, diabetes and obesity all have been linked to chronic sleep loss.
- There are more than 84 identified sleep/wake disorders.
- The average amount of time people sleep has dropped from nine hours in the pre-light bulb era to seven-and-a-half hours today.
- Each year, sleep-related errors and accidents cost U.S. businesses an estimated $56 billion, cause nearly 25,000 deaths and result in 2.5 million disabling injuries.
- Over 70 million Americans suffer from a sleep disorder. Of those, over 60% have a chronic disorder.
- People whose normal nightly sleep duration is either unusually short (less than four hours) or unusually long (more than nine or 10 hours) have a higher-than-average risk of dying prematurely.
- A person’s core body temperature drops to facilitate the onset of sleep. This means that artificial heat sources, such as electric blankets, can negatively affect a person’s quality of sleep.
- More than two million children suffer from sleep disorders.
- During sleep, the brain “consolidates” memories and skills, meaning that the brain strengthens, reorganizes and restructures memories during sleep.
- The National Highway Traffic Safety Administration reported that being tired accounts for the highest number of fatal single car run-off-the-road crashes, even more than alcohol.
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