MelissaA
Brenton
Shilpa Karhik
The Facts About SLEEP!
July 2nd 2007 00:25
-The record for the longest period without sleep is 18 days, 21 hours, 40 minutes. symptoms experienced included hallucinations, paranoia, blurred vision, slurred speech, memory and concentration loss.
- It's impossible to tell if someone is really awake without close medical supervision. People can unknowingly sleep with their eyes open..
- A new baby usually deprives it's parents of 400-750 hours of sleep in the first year.
- A bright light shone on the backs of human knees can reset your body clock but no-one knows why.
- Being awake for 17 hours straight is the equivalent of performing at a blood alcohol level of 0.05%.
- Unfamiliar noise, and noise during the first and last two hours of sleep, even if you don't wake up from it disrupts the sleep cycle.
- The "natural alarm clock" which enables some people to wake up more or less when they want to is caused by a burst of the stress hormone adrenocorticotropin in an unconscious anticipation of the stress of waking up.
- The light from a digital alarm clock can be enough to disrupt the sleep cycle even if you do not fully wake. The light turns off a "neural switch" in the brain, causing levels of a key sleep chemical to decline within minutes.
- To drop off we must cool off; body temperature and the brain's sleep-wake cycle are closely linked. That's why hot summer nights cause restless sleep.
Stay tuned for more interesting facts on sleep.
- It's impossible to tell if someone is really awake without close medical supervision. People can unknowingly sleep with their eyes open..
- A new baby usually deprives it's parents of 400-750 hours of sleep in the first year.
- A bright light shone on the backs of human knees can reset your body clock but no-one knows why.
- Being awake for 17 hours straight is the equivalent of performing at a blood alcohol level of 0.05%.
- Unfamiliar noise, and noise during the first and last two hours of sleep, even if you don't wake up from it disrupts the sleep cycle.
- The "natural alarm clock" which enables some people to wake up more or less when they want to is caused by a burst of the stress hormone adrenocorticotropin in an unconscious anticipation of the stress of waking up.
- The light from a digital alarm clock can be enough to disrupt the sleep cycle even if you do not fully wake. The light turns off a "neural switch" in the brain, causing levels of a key sleep chemical to decline within minutes.
- To drop off we must cool off; body temperature and the brain's sleep-wake cycle are closely linked. That's why hot summer nights cause restless sleep.
Stay tuned for more interesting facts on sleep.
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