Sleep

In young children (aged 2-6) at risk of becoming overweight, those who got less than 10 hours of sleep per night were more likely to have increased body mass index (BMI) than those who got more than 10 hours of sleep.

Menopause was associated with faster cellular aging, with women who started menopause earlier having increased 'cellular age'. Getting more sleep might help slow down this process.

Health
Sleep

Taking a 1-2 hour-long nap was more beneficial than caffeine for memory performance in a word recall task.

Going camping without artificial lights for the weekend can help reset your sleep cycle to more closely match natural light cycles and wake up earlier.

Sleep

Having workday sleep habits that don’t match day-off sleep habits is associated with metabolic health problems (for example, higher body mass index), with a greater difference between workday and free-day schedules associated with greater health affects.

Health
Sleep

Napping for 20 minutes in either a chair or bed improved mood and sleepiness for habitual nappers, but napping in a bed was associated with greater alertness post-nap.

Biological Psychology

Despite getting the same amount of sleep, people who were woken up at night had significantly worse mood the next day than people who went to sleep later but slept through the night.

Drinking a cup of coffee then taking a short nap before a 2-hour drive reduces sleepiness and driving incidents more than a coffee or nap separately.

People who slept less than 6 hours a night were 4 times more likely to catch a cold.

Health
Sleep

When sleeping participants were repeatedly played a sound that was associated with prior counter-stereotype training, they showed reduced subconscious gender and racial bias the next day.