Questions tagged [sleep]

Sleep is a naturally recurring state characterized by reduced or absent consciousness, relatively suspended sensory activity, and inactivity of nearly all voluntary muscles. It is distinguished from quiet wakefulness by a decreased ability to react to stimuli, and is more easily reversible than being in hibernation or a coma.

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Should you regularly replace your pillow?

According to an article in the Guardian: Out of 2,200 men and women, only 18% knew they should replace their pillows every two years. The average person uses the same pillow for three years and two ...
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Which position is healthiest for sleep?

If you believe the internet, there is no healthy way for you to sleep: front, back, side, fetal; they are all going to cause you problems like acid reflux, spinal problems, skin problems, problems ...
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Is sleepiness after a goods night's sleep a sign of dehydration?

If you still feel tired after a good night's sleep, you're probably dehydrated. Drink some water after you wake up. — Just So You Know (@Know) April 22, 2013 Some quick searching unsurprisingly ...
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“Relax and Win” - Classified military method to fall asleep quick?

The book Relax and Win by Bud Winter (a track coach) claims to reveal relaxation techniques developed by him and others for the US military: Based on mental and physical training methods used to ...
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Does drinking water right after waking up reduce sleepiness?

Related but with no answers (at the time of this posting). Several websites and "health tips" blogs recommend doing this after waking up to reduce sleepiness after waking up. (references, google ...
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Can audio played during REM sleep improve recall?

I was reading about sleep-learning - for example of the type depicted in The Simpsons episode, Bart's Friend Falls in Love: Homer orders a subliminal cassette tape to help him lose weight, but is ...
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523 views

Does oversleeping lead to reduced alertness?

There are several studies (Example 1, Example 2) about the effect of sleep deprivation on alertness and cognitive performance. Are there any studies investigating the opposite - The effect of too ...
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836 views

Has hypnopaedia been proven to work? To what extent?

The idea of learning during sleep, say by listening to a recorded class, can be tempting to make a good use of roughly a third of the day. Has it ever worked though? If so what is the most efficient ...
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Can a raw-food diet allow someone to “switch” from one side of his brain to the other when he gets tired?

The following article relates this claim by someone who stayed awake for 11 days: How can someone stay awake for 11 days? He also employed a unique raw-food diet. Wright claims that his regimen ...
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Do salt lamps produce negative ions?

Do claims that Himalayan Salt Lamps produce negative ions when lit with an incandescent bulb have any science to back it up?
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312 views

Are people who sleep on the left side of the bed happier in their job?

According to a 2011 study by hotel chain Premier Inn, people who sleep on the left side are better off than those who sleep on the right side. One of the examples they give: In fact, 31% of ‘...
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Does sleeping in a cold room reduce the risk of diabetes?

According to Elite Daily, there may be some health benefits to sleeping in a room at between 60-67°F (15-19°C) In particular, they cite Temperature-acclimated brown adipose tissue modulates ...
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Does eating cheese help one to fall asleep or have a sound sleep?

Does eating cheese help one to fall asleep or have a sound sleep? According to Dr. Oz it does: Cheese and 100% whole grain crackers are your best bedtime-snack bet. The whole grains help produce ...
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Can irregular sleeping hours cause developmental issues for the brain?

It seems to be a common belief (i.e. here) that in order for our brain to rest and grow properly, we need to have regular, maintained sleeping regimes. While there seems to be no doubt that sleeping ...
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Is the microorganism buildup in bedsheets harmful?

According to business insider, the New York University microbiologist Philip Tierno claims that bedsheets should be washed once a week and that mattresses should be changed more frequently because ...
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Are you more likely to wake to a noise which is “relevant” to you?

Here How Noise Affects Your Sleep, While you sleep, your brain continues to register and process sounds on a basic level. Noise can jostle your slumber—causing you to wake, move, shift between ...