The large ("massive") sleep study, claiming "one size fits all," relying on self-reported data, is akin to food studies with diaries, and cannot be viewed as reliable evidence.
https://academic.oup.com/sleep/advance-article/doi/10.1093/sleep/zsy182/5096067 … #OA
https://www.wsj.com/articles/when-it-comes-to-sleep-one-size-fits-all-1540481975 … @WSJ
Large N ≠ good methodology or conclusionspic.twitter.com/eQOxXOVXNP