Insomnia is often dismissed as a nighttime nuisance, but mounting evidence suggests it is a full‑time brain state that refuses to power down. Instead of smoothly shifting into a quieter, internally ...

Why does the brain refuse to switch off at night? New research links insomnia to disrupted circadian rhythms and delayed cognitive disengagement.

Many older adults struggle with sleep as their brains fail to switch off, a study reveals. Insomniacs' brains remain alert due to a flattened circadian rhythm and persistent sequential thinking, ...

Australian scientists have uncovered strong evidence that chronic insomnia may stem from disruptions in the brain’s internal 24-hour cycle of mental activity. The findings help explain why some people ...

Here’s why sleep matters so much – plus how to fall asleep faster and stay asleep longer.

When teenagers shift their sleep schedules between school days and weekends, the resulting mismatch can alter the physical ...

Findings from Mass General Brigham investigators highlight the intricate interplay of diverse physiological processes as the brain shifts from wakefulness to sleep. A new study by investigators from ...

By Hugo Francisco de Souza New neuroimaging research shows that when sleep-deprived people lose focus, the brain briefly shifts toward sleep-like physiology, offering fresh insight into why cognitive ...

The brain reinforces seizure networks during post-seizure sleep by hijacking the same mechanisms used for memory consolidation.

The brain may inadvertently "learn" to have seizures by treating them like important memories to be stored, according to new ...

Learn how caffeine affects brain chemicals and health, sleep, and mood. Understand safe daily limits, hidden sources, and signs you’re getting too much.