Hunter-Gatherers

https://theconversation.com/hunter-gatherers-live-nearly-as-long-as-we-do-but-with-limited-access-to-healthcare-104157

https://stw-news.org/how-many-hours-a-day-did-hunters-and-gatherers-work/

https://ypte.org.uk/factsheets/hunter-gatherers/what-are-some-pros-and-cons-of-a-hunter-gatherer-lifestyle

https://hraf.yale.edu/ehc/summaries/hunter-gatherers

https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0287101

https://archive.is/pEiIS