Articles on Sleep loss

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‘An unusual window into human sleep’: Nasa astronaut Victor Glover during the Artemis II mission, April 6 2026. Nasa Space Collection/Alamy

What space travel teaches us about sleep and circadian rhythms

What happens to astronauts’ circadian rhythms when the Sun no longer provides a reliable schedule?
Half of surveyed college students said they go to bed after 1 a.m., on average. iStock via Getty Images Plus

We paid college students about $5 a night to sleep at least 7 hours – and their grades quickly improved

Universities and colleges won’t necessarily pay students to sleep. But they can offer other incentives that encourage them to close their eyes earlier.
How much does the moon cycle affect sleep? Probably less than your screen time at night. Muhammad Khazin Alhusni/iStock via Getty Images Plus

Does the full moon make us sleepless? A neurologist explains the science behind sleep, mood and lunar myths

Folklore suggests that a full moon has a strong effect on sleep. But the reality is more complex, and lifestyle habits like screen use before bedtime are likely to have a larger effect.
Getting enough sleep is one of the most effective ways to restore metabolic balance in the brain and body. SimpleImages/Moment via Getty Images

Sleep loss rewires the brain for cravings and weight gain – a neurologist explains the science behind the cycle

Even one night of inadequate sleep can shift your hunger into overdrive, setting off a chain reaction in the brain. But one or two nights of solid sleep can help reset metabolism.
Daylight saving time kicks in on March 9, 2025, but some say it leads to more heart attacks, depression and car accidents. Lord Henri Voton/E+ via Getty Images

Daylight saving time and early school start times cost billions in lost productivity and health care expenses

The current system − daylight saving time and early school start times − wastes billions while causing more car accidents, workplace injuries and health issues.
A cup of coffee might provide you some pep, but it won’t fully make up for lost sleep. nopponpat/iStock via Getty Images Plus

Can coffee or a nap make up for sleep deprivation? A psychologist explains why there’s no substitute for shut‑eye

While a cup of joe or a brief nap during an all-nighter might help you feel a little more alert, it won’t offset cognitive impairments from sleep deprivation when you’re performing complex tasks.
Research shows that sleep deprivation impairs communication between brain regions and brain blood flow, damages brain wiring and makes a young brain look like an aged brain. (Shutterstock)

Sleep deprivation benefited our ancestors, yet harms us now — but staying fit may help us cope

Ancient humans chose to sleep less, which had evolutionary benefits. For modern humans, sleeping less is futile and detrimental, but fitness may be a powerful ally in today’s epidemic of sleep loss.

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