John is the editor of World Day, the English edition of journee-mondiale.com, which covers home and decor ideas, sleep, and international observances. The mattress reviews, comparisons and buying guides published under his byline in the World Sleep Almanac are desk research built from each manufacturer's official product and policy pages (trial and returns, warranty, construction, listed prices) and dated at every update. They are not lab tests and not medical advice. How the scores work: https://www.journee-mondiale.com/en/world-sleep-almanac/
