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Elena Thomas أضاف وظيفة جديدة Health
2026-10-28 09:19:43 -

How Does the Body's Sleep-Wake Rhythm Affect Daytime Alertness?
The human body follows an internal timing system that influences when a person feels sleepy and when they feel alert. This system is closely connected to the circadian rhythm, which operates on an approximately 24-hour cycle. Light exposure, sleep schedules, meals, physical activity, and work patterns can influence how this rhythm aligns with everyday life. When the internal clock and daily...

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Elena Thomas أضاف وظيفة جديدة Health
2026-11-03 11:40:30 -

Understanding Daytime Sleepiness and Its Cause
Daytime sleepiness is a common concern that can affect concentration, productivity, and daily routines. Although occasional tiredness is normal, persistent sleepiness may sometimes be associated with irregular sleep schedules, sleep disorders, or disruptions in the body's internal clock. The sleep-wake cycle is regulated by circadian rhythms and sleep pressure. When these processes...

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