The physical activity paradox: six reasons why occupational physical activity (OPA) does not confer the cardiovascular health benefits that leisure time physical activity does. 
Holtermann A, Krause N, van der Beek AJ, Straker L. Br J Sports Med. 2018 Feb;52(3):149-150. doi: 10.1136/bjsports-2017-097965. No abstract available. PMID: 28798040