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Why You Wake Up Exhausted, Even After 8 Hours Of Sleep

Erin Kelly

created: Jan. 5, 2026, 7:51 p.m. | updated: Jan. 9, 2026, 2:38 a.m.

The Hidden Sleep Disorder Keeping You TiredObstructive sleep apnea affects an estimated 80 million adults in the US, and roughly 1 billion people worldwide. Characterized by periods of breathing interruptions during sleep, obstructive sleep apnea is a sleep-related breathing disorder resulting from repetitive collapse of the upper airway during sleep. What Sleep Apnea Actually Does To Your SleepUnfortunately, spending a full night in bed doesn’t always guarantee a fully charged morning. Moderate sleep apnea is defined as 15 to 29 breathing interruptions per hour, while severe sleep apnea involves 30 or more interruptions every hour. Diagnosis typically involves a sleep study, conducted either in a lab or at home, which monitors breathing patterns, oxygen levels, and sleep stages to identify disruptions like sleep apnea.

1 month, 1 week ago: Inverse