Body Mind StateResearch
Study briefs that keep the method, population, outcome, and uncertainty visible.
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Editorially reviewed
A September 30 experiment in 34 healthy adults found different overnight EEG patterns after acute stress. The memory result is subtler than a claim that stress improves or damages recall.
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Sleep
Editorially reviewed
A September 30 experiment in 34 healthy adults found different overnight EEG patterns after acute stress. The memory result is subtler than a claim that stress improves or damages recall.
Stress
Editorially reviewed
A September 30 crossover experiment found less reported stress and sleepiness after a combined breathing-and-light session. Heart-rate variability and selected EEG measures did not show significant intervention effects.
Cold Exposure
Editorially reviewed
A 13-study meta-analysis pooled outcomes from 4,105 adults. Favorable point estimates were uncertain, all five randomized trials were high risk of bias, and safety reporting was sparse.
Sleep
Editorially reviewed
Researchers identified brain-cell populations involved in the drive to sleep. The finding helps explain a mechanism—not how humans can safely need less rest.
Sleep
Corrected
A nine-study review found promising self-reports but inconclusive device-measured sleep results. The difference is worth understanding.
Neuroscience
Corrected
An influential small study and a larger randomized investigation reached different results. Neither supports a promise to grow or shrink a particular brain region.
Breathwork
Corrected
Breathing can change beat-to-beat timing. Understanding that measurement helps avoid turning a short-term response into a claim of lasting repair.
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