The paper referenced does NOT state that "Blood pressure should be measured lying down" as the OP posted here on HN. It states instead: “Our findings suggest

The paper referenced does NOT state that "Blood pressure should be measured lying down" as the OP posted here on HN. It states instead: “Our findings suggest people with known risk factors for heart disease and stroke may benefit from having their blood pressure checked while lying flat on their backs ... Efforts to manage blood pressure during daily life may help lower blood pressure while sleeping. Future research should compare supine blood pressure measurements in the clinic with overnight measurements.[emphases mine]”