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.
Sleep Basics
Scientists propose the mind turns gloomy and rash after midnight
A 2022 review proposes the Mind After Midnight hypothesis: being awake during the biological night darkens mood, draws attention to negative things, and weakens self-control, which may raise the risk of harmful choices. It remains untested.
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 is linked to these risks.
Sleep and Health
Bedroom night light ties to higher heart and stroke risk
In 88,905 adults followed with wrist light sensors, brighter nights were tied to higher future risks of coronary disease, heart attack, heart failure, atrial fibrillation, and stroke under the paper's primary model 3 (demographics, socioeconomic factors, physical activity, smoking, alcohol, diet, and urbanicity). That pattern is association, not proof that your bedroom lamp causes disease. A lab study in healthy young adults found one night of moderate room light during sleep caused a higher nighttime heart rate and lower heart-rate variability and showed higher HOMA-IR, higher 30-minute insulin area under the curve, and a lower Matsuda index the next morning versus very dim light. For everyday sleep space habits, the CDC recommends a cool, dark, quiet bedroom and limiting bright artificial light before bed.
videoListening to theta binaural beats may help calm and sleep
Binaural beats are a sound effect made by playing two slightly different tones, one in each ear. The brain perceives…
Sleeping naked is not proven to extend lifespan
Headlines that tie nudity to extra years of life are not backed by serious longevity research. What holds up in sources is narrower: heat at night often fragments sleep, public health pages recommend a cool bedroom, and one home-based study in community-dwelling older adults points to a 20-25 °C band under nonlinear models with large person-to-person differences. Choosing pajamas is personal; comfort and room temperature matter more than anti-aging slogans.
videoPeople who keep lost weight off stay active about an hour a day
Most lost weight returns within a few years. People who keep it off report about an hour of activity a day, and an eight-month trial found cardio cut more body fat than weights, which mainly added muscle.
videoOzlo Sleepbuds mask noise and stream audio to help you sleep
Ozlo Sleepbuds use noise masking and a secure fit to block snoring and traffic. They now stream your audio and switch to sleep sounds when you doze off.
Loop Dream sleep earplugs reduce low noise and help light sleepers sleep through the night
Loop has released Dream, a pair of reusable sleep earplugs that aim to block low, irregular nighttime sounds while staying…
Sleep Science
Sleep twitches at dozing off are common and usually harmless
Many people feel a sudden jolt just as they are falling asleep. Doctors call this a hypnic jerk, also named…
Lucid dreaming: induction methods, benefits, and scientific research
Lucid dreaming is a phenomenon where the dreamer becomes aware they are dreaming and may even gain control over the…
Startup says two people sent a word to each other while dreaming
A California startup reports that two lucid dreamers exchanged a simple message while asleep. According to the announcement, sensors confirmed…
videoOxyZen by BrainCo: an AI meditation headband for sleep
This new AI meditation headband from BrainCo, called OxyZen, uses EEG sensors and an AI sleep coach to help you relax and sleep better.
Suggested slug: ai-meditation-headband-sleep
CNET’s Mattress Smasher 9000 scores bed firmness from 1 to 10
CNET's Mattress Smasher 9000 presses a plate into each bed with about 165 pounds of force and turns how deep it sinks into a firmness score from 1 to 10, giving shoppers one scale to compare beds.
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…