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Buy my book and course: https://ideaman.tv/ksiazka-pozegnaj-p... Animations on request: http://ideaman.tv/animacje/ Podcast: https://bit.ly/podcastDZ Sources: Sleep deprivation: https://pubmed.ncbi.nlm.nih.gov/12683... Sleep duration vs. efficiency: https://www.ncbi.nlm.nih.gov/pmc/arti... https://www.ncbi.nlm.nih.gov/pmc/arti... https://pubmed.ncbi.nlm.nih.gov/32360... The impact of sleep debt on hormonal cycles: https://advances.sciencemag.org/conte... Chronotypes and the melatonin cycle: https://www.ncbi.nlm.nih.gov/pmc/arti... Support the channel: / average person Consulting, mentoring and business questions: [email protected] #education #psychology #fatigue --- Facebook fanpage: / niezacietneidee All content, including proper names and quotes, is used for educational purposes. The use of logos is for informational purposes. None of the elements of the film is and cannot be a substitute for therapy or individual psychological counseling.