In 134 healthy young adults, more than 24 hours without sleep temporarily increased MRI-predicted brain age. After recovery sleep, brain age was no longer different from baseline.
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In 134 healthy young adults, more than 24 hours without sleep temporarily increased MRI-predicted brain age. After recovery sleep, brain age was no longer different from baseline.
An eight-week field study found that cortisol fell after nature experiences, with the greatest stress-reduction efficiency occurring around 20 to 30 minutes.
In an experiment with adults ages 20 to 34, participants performed worse on an attention test when a smartphone was present, even without interacting with it.
In a registered replication, participants assigned to spend money on a stranger in need reported greater momentary happiness than participants assigned to spend it on themselves. A second recall experiment did not find the same effect.
A meta-analysis of 148 studies and 308,849 participants found that people with stronger social relationships had a 50% greater likelihood of survival across the study periods.
A large dose-response meta-analysis found lower mortality, cardiovascular disease, and cancer risks at activity levels below the standard 150-minute weekly recommendation.
In a randomized trial of 3,018 adults, finishing showers with 30 to 90 seconds of cold water reduced self-reported sickness absence, but did not reduce the number of illness days.
EEG recordings from 36 university students showed more elaborate theta and alpha connectivity patterns while handwriting than while typewriting.