How does hibernation help?

Dormouse particularly known for their hibernation.During hibernation the dormouse save energy, accumulate fat which also help the dormouse to survive the winter without eating much.

One of the most notable characteristics of those dormice that live in temperate zones is hibernation. Dormice can hibernate six months out of the year, or even longer if the weather remains...

During hibernation, the animals body 'shuts down'. All digestion is suspended, and physical activity is almost non-existent. This serves to greatly save energy - at a time when the animals food is...

It would be useful in space flight.

The same way it helps any animal that hibernates - it protects if from the extreme cold of winter.