Don't worry, it's possible to break this unrelenting cycle for more restful sleep.

Scientists may have new answers to why pop-ups or notifications grab our attention. Turns out our attention is on a cycle, shifting seven to 10 times per second. This rhythmic occurrence may be ...

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 ...

Blood pressure tends to rise in the early morning and peak by mid-morning due to circadian rhythm and other factors. Learn ...