The findings, published in the Journal of Clinical Investigation, show that interventions designed to reinforce the body's natural circadian rhythms, such as timed light exposure, melatonin or a body clock-targeting drug, improved recovery in mouse models of stroke. The findings, published in the Journal of Clinical Investigation, show that interventions designed to reinforce the body's natural circadian rhythms, such as timed light exposure, melatonin or a body clock-targeting drug, improved recovery in mouse models of stroke.