Sleep
Sleep is a pillar of physical health and mental clarity. Research covers the impact of sleep on cognitive performance, emotional regulation, and the latest innovations in sleep-tracking wearables and smart recovery tools.
Level 1
Human brain not designed to stay awake after midnight
Scientists propose the Mind After Midnight hypothesis, arguing that the brain shifts into a markedly different mode when we stay…
Adults should aim for 7 or more hours of sleep to maintain optimal health
Experts recommend at least 7 hours of sleep for adults to avoid health risks like obesity and heart disease. Sleeping less than 7 hours harms the body.
Level 2
Going without sleep can impair you as much as being drunk
Sleep deprivation significantly impairs cognitive and physical functioning, likening its effects to alcohol intoxication. Staying awake for 17 hours equates…
Staying awake too long can cause hallucinations and psychotic-like symptoms
A systematic review of 21 studies on sleep deprivation shows that going without sleep for extended periods causes visual, auditory,…
Sleep deprivation makes you angrier by disrupting brain control
New research confirms sleep deprivation triggers anger by disrupting the brain's ability to regulate emotions via the amygdala and prefrontal cortex.
videoEffects of sleep deprivation: from craving carbs to health risks
In an experiment to understand the impact of sleep deprivation, ABC News correspondent Dan Child stayed awake for 50 consecutive…
Heavy drinking wrecks sleep, and poor sleep makes it harder to quit
Chronic alcohol use creates long-lasting changes in sleep architecture that persist even after abstinence. Alcohol initially reduces sleep latency and enhances slow-wave sleep, but later disrupts sleep quality. These sleep disturbances, especially insomnia and REM sleep abnormalities, significantly increase relapse risk in alcohol dependence. Treating sleep disorders may improve recovery outcomes.
Caffeine disrupts sleep even when taken 6 hours before bedtime
A study found that consuming 400 mg of caffeine (equivalent to approximately 3-4 cups of coffee, depending on size and type) even 6 hours before bedtime significantly disrupts sleep, reducing total sleep time by over an hour. Participants often underestimated these effects, with objective measures showing greater disruption than subjective reports. These findings support avoiding caffeine at least 6 hours before sleep.
Level 3
The “No-Sleep Challenge” highlights severe risks of sleep deprivation
Sleep deprivation, worsened by social media trends like the “no-sleep challenge,” poses serious health risks. Extended wakefulness can lead to…
videoYour brain wiring may determine how much sleep you need
New neuroscience research reveals that individual variations in brain connectivity impact the amount of sleep needed for optimal functioning. People…
Motion Pillow aims to reduce snoring with smart technology
Motion Pillow is a sleep solution designed to reduce snoring by adjusting head position during sleep. The pillow incorporates built-in…
Positive memory reactivation during sleep reduces negative memory recall
Reactivating positive memories during non-REM sleep can weaken the recall of associated negative memories. This sleep-based technique, known as targeted…
Night owls may be smarter than early risers
Les couche-tard seraient plus intelligents que les couche-tôt, mais une durée de sommeil de 7h à 9h est plus importante.
A wearable device designed to trigger lucid dreams on demand
A forthcoming device called Halo, expected to launch in 2025, is designed to help users achieve lucid dreams. By stimulating…