Rare is the study that focus on how monks and nuns sleep. One is: “Ring the Bell for Matins: Circadian Adaptation to Split Sleep by Cloistered Monks and Nuns,” Isabelle Arnulf [pictured here], Agnès Brion, Michel Pottier and Jean-Louis Golmard, Chronobiology International, Dec., 2011, Vol. 28, No. 10 , pp. 930-41. (Thanks to investigator Yvette […]