Timing matters: The contribution of running during different periods of the light/dark cycle to susceptibility to activity-based anorexia in rats

•Rats that are susceptible and resistant to weight loss during activity-based anorexia exhibit distinct running patterns.•Resistant animals allocate a higher percentage of their running to food anticipatory activity both prior to and during activity-based anorexia.•Susceptible animals run more overall and during the dark cycle than resistant animals.