Recent Examples on the WebMy son has a set biorhythm, and no arbitrary daylight saving law is going to shift it. Rachel Meyer, Washington Post, 20 Nov. 2019 My son has a set biorhythm, and no arbitrary daylight saving law is going to shift it. Rachel Meyer, Washington Post, 20 Nov. 2019 My son has a set biorhythm, and no arbitrary daylight saving law is going to shift it. Rachel Meyer, Washington Post, 20 Nov. 2019 My son has a set biorhythm, and no arbitrary daylight saving law is going to shift it. Rachel Meyer, chicagotribune.com, 22 Nov. 2019 The biorhythm lasts for one day in rats; four days in macaques; five days in sheep; and six to 12 days in humans.Quanta Magazine, 13 Dec. 2016 Perhaps not coincidentally, these are the only two physiological features that Bromage found to directly correlate with the length of the new biorhythm.Quanta Magazine, 13 Dec. 2016 Deutsche Lufthansa AG last year began using 24 different light settings on its Airbus A350-900 planes to help manage passenger biorhythms during long haul flights. Robert Wall, WSJ, 24 Mar. 2018 See More