17 July

A while back I shared the fallacies around life expectancy, and how we think we're all living longer than our ancestors, when we actually aren't - it's a misunderstanding about averages. Another classic area where averages mislead us is sleep, I've lost count of the number of times people are told they need 8 hours sleep per night. Peoples' sleep varies, for good reasons, we shouldn't try to change our life to fit some average. And study of indigenous cultures gives further support to this: http://news.nationalgeographic.com/2015/10/20151015-paleo-sleep-time-hadza-san-tsimane-science/