Sounds kind of Familiar

Power-napping helps late-born dormice prepare for winter

For hibernating mammals, the pre-winter months are a race against time to accumulate enough energy reserves to last until spring. Offspring born late in the year have much less time to achieve this. Austrian scientists have discovered that power-napping can help late-born dormice overcome these unfavourable odds.
During hibernation, dormice enter into 'torpor' to save energy and water. In this state, the dormice become inactive and show a marked decrease in their metabolic rate, causing their body temperature to reduce. However, late-born dormice use bouts of torpor during the summer to "catch up" with their earlier-born counterparts. "The longer an animal stays in torpor, the more energy it saves," says Dr Sylvain Giroud (Research Institute of Wildlife Ecology, Austria), who led the study.
Torpor use was measured using temperature loggers placed in the nests of the animals which detected the sharp drop in body temperature which occurs in dormancy. Late-born juveniles entered into torpor more frequently and for longer periods, allowing them to achieve higher growth rates. As a result, the late-born juveniles reached a similar size to the early-born dormice at the onset of winter.