Why do I still feel tired after 8 hours of sleep?

Related questions

1. Why do I need 10 hours of sleep?
2. Is 3rd shift bad for your health?
3. Is being very tired a sign of cancer?
4. Does blue light from screens damage eyes?
5. Do naps help tiredness?
6. What does it mean if you wake up at 2am?
7. Is it okay to sleep 12 hours a day?
8. What causes parasomnia disorder?
9. Why do I sleep for 12 hours?
10. Is it bad to nap in the evening?

Tags

1. #needs
2. #hours
3. #problem
4. #cells
5. #information
6. #sleep
7. #replenish
8. #phase
9. #brain
10. #clutter
11. #tired
12. #unwanted
13. #getting
14. #about
15. #exposed
16. #riding
17. #during
18. #enough
19. #night
20. #spend