09:12 21/06/2025
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Nguồn tham khảo
  1. Suni, E., & Suni, E. (2024, May 13). How much sleep do you need? Retrieved from https://www.sleepfoundation.org/how-sleep-works/how-much-sleep-do-we-really-need
  2. Summer, J. V., & Summer, J. V. (2023, November 14). Is 5 hours of sleep enough? Retrieved from https://www.sleepfoundation.org/sleep-faqs/is-5-hours-of-sleep-enough
  3. Robinson, L., & Smith, M., MA. (2025, January 16). Sleep deprivation: symptoms, causes, and effects. Retrieved from https://www.helpguide.org/wellness/sleep/sleep-deprivation
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