Bears, hedgehogs and mice destroy brain connections as they enter hibernation, and repair them as they wake up.
A UK team discovered “cold-shock chemicals” that trigger the process. They used these to prevent brain cells dying in animals, and say that restoring lost memories may eventually be possible.
We know that RBM3 protects, regardless of whether it was produced by hibernation or artificial elevation of just the protein RBM3. So you don’t need to go out trying to freeze yourself 😉