Before revision: Experiment simulating "shift-work" (keep mice awake for 6 hours of their inactive period for several days) in mice showed that mice misaligned with the external LD cycle had decreased metabolic efficiency and disrupted cardiac function.
After revision: Experiment simulating "shift-work" (keep mice awake for 6 hours during their inactive period for several days) in mice showed that mice misaligned with the external LD cycle had decreased metabolic efficiency and disrupted cardiac function.