insomnia

Causes of early waking

Causes of early waking

VnExpress
Early waking can stem from insomnia, sleep apnea syndrome, or the effects of aging.
How polyphasic sleep can harm health

How polyphasic sleep can harm health

VnExpress
While polyphasic sleep offers temporary alertness and focus, consistent practice can lead to sleep deprivation, increasing the risk of depression and heart disease.
The dangers of frequent sleeping pill use

The dangers of frequent sleeping pill use

VnExpress
While sleeping pills can offer temporary sleep improvement, frequent use or use contrary to a doctor's instructions can lead to prolonged drowsiness, dependence, and memory impairment.