Han-Chow Koh, PhD, and Frank A.J.L. Scheer, PhD, of the Medical Chronobiology Program at the Division of Sleep and Circadian Medicine in the Mass General Brigham Department of Medicine, are the co-lead and senior author, respectively, of a paper published in Metabolism, “Constant-routine protocol reveals an endogenous circadian rhythm in diet-induced thermogenesis with a peak in the biological morning.”