Why Poor Sleep Quality Leaves You Tired After 8 Hours
You feel tired after 8 hours of sleep because poor sleep quality, characterized by frequent awakenings and insufficient deep sleep, fails to provide restorative benefits despite adequate duration.
- 8 hours of sleep doesn't ensure energy if quality is low due to disruptions.
- Frequent awakenings and light sleep stages prevent restorative rest.
| Claim | Scientific Observation | Impact Magnitude | Source | ||
|---|---|---|---|---|---|
| Poor sleep quality increases fatigue independently of duration | Association in stressed young adults | Higher fatigue levels | Chia-Ming Chen et al. (2023), BMC Public Health | ||
| Disrupted deep sleep reduces benefits | Frequent awakenings impair restoration | Daytime tiredness after 8 hours | Chia-Ming Chen et al. (2023), BMC Public Health | ||
| Quality predicts fatigue better than quantity | Studies on sleep metrics | Stronger correlation with energy | Chia-Ming Chen et al. (2023), BMC Public Health |