7 Day cycles are not an abstract invention but a fact of biology. Link to research: https://pubmed.ncbi.nlm.nih.gov/27830946/ https://pubmed.ncbi.nlm.nih.gov/2

7 Day cycles are not an abstract invention but a fact of biology. Link to research: https://pubmed.ncbi.nlm.nih.gov/27830946/ https://pubmed.ncbi.nlm.nih.gov/27830946/ Link to full PDF: https://www.researchgate.net/publication/309898157_Seven-day_human_biological_rhythms_An_expedition_in_search_of_their_origin_synchronization_functional_advantage_adaptive_value_and_clinical_relevance https://www.researchgate.net/publication/309898157_Seven-day...