Does our body “switch off” when we sleep?
Mami Kempe / The Conversation
The most interesting part of our body that changes during sleep is our brain.
Homeless people are far more likely to suffer sleep deprivation with all its associated problems.
As many as 70 million Americans may not be getting enough sleep. Men get fewer hours of sleep than women.
Few things seem to matter to our health as much as a good night’s sleep, but fewer and fewer of Americans are getting it. A neurologist explains why sleep is so important.
A New York engineer is wheeled away in December 2013, after a train he was driving crashed. Lack of sleep could have been a factor.
AP Photo/Robert Stolarik
Most Americans dread the time switch to daylight saving time, which results in a loss of an hour's sleep. The downside is more serious than that – it can lead to workplace injuries and traffic fatalities.
Flies will often sleep on the underside of leaves, to escape from heat and predators.
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Flies need good grip because they often sleep upside down.
We know that lots of animals, maybe all animals, sleep. Cats, dogs, even worms and jellyfish sleep. But we still don’t know exactly why they started sleeping.
Marcella Cheng/The Conversation
Pond snails use things like rocks or the side of their aquarium as their bed, attaching themselves while they sleep. This might not seem very relaxing but their shells do hang away from their body.
Naps have many benefits, including improving memory, reaction times and mood
The benefits of naps are similar to those experienced after consuming caffeine, but without the side effects of caffeine dependence and possibly disrupted sleep at night time.
Cars are often warm and comfortable and we are usually feeling safe and relaxed.
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You might be trying to catch up on sleep. Sleep scientists say some children need only nine hours of sleep at night, while others need as much as 11 hours. It depends on the person.
Science shows that early starts can be bad for teenagers' health. Schools and universities would be better off starting at 10am.
Getting enough sleep can help our memory, waistline and our performance at work.
If you need an alarm to get up in the morning, you're probably not getting enough sleep.
At some point, it stopped being all fun and games.
With studies from the past year exploring the relationship between smartphone use and mental health, sleep, learning and romance, a more nuanced portrait of the device has emerged.
Poor quality sleep is almost guaranteed over the festive period. Here's how to get some decent shut-eye.
Waking up is hard to do.
It's normal to feel a bit groggy when you wake up – parts of your brain are still asleep.
Children with an irregular bedtime performed worse on cognitive tests, had worse behaviour and were more likely to be obese than others.
John Collier / Wikimedia Commons
It is worth remembering that sleep 'crises' are far from new.
Worrying about not being able to sleep pushes it further away.
If you're tossing and turning in the middle of the night, these techniques may help you to nod off.
The amount of time teens have spent working and participating in extracurricular activities has held steady in recent years. There has, however, been one big change in their lives: smartphones.
Not all young children want – or are able – to sleep at the same time.
Mandatory sleep times in early childhood settings do not work for children, educators or parents, and need to change.
Bad night’s sleep? Blame your genes.
A. and I. Kruk/shutterstock.com
Whether you're a night owl or a morning lark, circadian rhythms control just about every aspect of your health.
Research shows that night waking in infancy is associated with behavioural control challenges at three and four years of age.
Poor sleep in infants and children has been linked to an array of problems, from aggression to poor school performance to diabetes, obesity and suicide. Our expert reviews the science.