Simplify the following text for a Grade 6 native English-speaking person.
Original: If the weather is cold and wet , and food scarce , it saves energy by going into torpor ; it curls up into a ball and goes to sleep .
Simplified: If the weather is cold and wet and there is not much food , it saves energy by going into torpor ( a temporary hibernation ) . It curls up into a ball and goes to sleep .