Why You're Always Tired (Even After 8 Hours of Sleep)

Why am I always tired, even after 8 hours of sleep? You slept 8 hours, so why are you still exhausted? We go inside your body to look at 8 real reasons you might feel tired even after a full night's sleep, from sleep quality and your body clock to caffeine, alcohol, sleep apnoea and low iron, plus a simple tiredness reset you can start tonight. Quick check: are you an A or a B? Tell us in the comments! CHAPTERS 0:00 Intro 0:23 Quick check: A or B? 0:46 1. Hours vs good sleep 1:51 2. Your brain needs time to boot up 2:36 3. Your body clock 3:19 4. Caffeine 4:09 5. Alcohol 4:49 6. Sleep apnoea 5:43 7. Something in your blood 6:28 8. The small stuff 7:14 What your answer means 7:40 Your tiredness reset SOURCES NHS, Tiredness and fatigue: https://www.nhs.uk/conditions/tiredne... NHS, Self-help tips to fight tiredness: https://www.nhs.uk/live-well/sleep-an... NHS, Insomnia: https://www.nhs.uk/conditions/insomnia/ NHS, Sleep apnoea: https://www.nhs.uk/conditions/sleep-a... NHS, Iron deficiency anaemia: https://www.nhs.uk/conditions/iron-de... NHS, Vitamin B12 or folate deficiency anaemia: https://www.nhs.uk/conditions/vitamin... NHS, Underactive thyroid: https://www.nhs.uk/conditions/underac... NHS, Dehydration: https://www.nhs.uk/conditions/dehydra... CDC, About Sleep: https://www.cdc.gov/sleep/about/index... NIH (NINDS), Brain Basics: Understanding Sleep: https://www.ninds.nih.gov/health-info... NIH (NIGMS), Circadian Rhythms: https://www.nigms.nih.gov/education/f... Hilditch & McHill (2019), Sleep inertia: current insights, Nature and Science of Sleep: https://pmc.ncbi.nlm.nih.gov/articles... Drake et al. (2013), Caffeine effects on sleep taken 0, 3, or 6 hours before going to bed, J Clin Sleep Med (summary): https://aasm.org/late-afternoon-and-e... Ebrahim et al. (2013), Alcohol and sleep I: effects on normal sleep, Alcohol Clin Exp Res (summary): https://www.sciencedaily.com/releases... This video is general information, not medical advice. If you're worried about your health, talk to a doctor. #sleep #tired #health