And we are mostly made up of water.
How about some additive to water that prevents is from expanding when it freezes. Or maybe some kind of electrical or magnetic force, or EM force? A microwave seems to be a the natural resonance frequency of the water molecule. Can you hold the water molecule in “a state” at or below freezing while applying a microwave source. Seems like you might be able to change the transition point not by adding energy but preventing the water molecule from moving.
“How about some additive to water that prevents is from expanding when it freezes.”
Hibernation gets you mostly there, and, for sure, with a much shorter wake-up time.
The question is whether humans can actually hibernate - doing that is not child’s play.
Some cold-blooded animals have natural antifreeze to prevent ice from forming at sub zero temperature. But it only works so far. Once water freezes, there is nothing to prevent crystallization which causes it to expand, destroying every cell in the body. It’s just the physics of how the water molecule works, and as Scotty would say you canna change the laws of physics. Walt Disney would love it if we could (he had his head cryonically frozen).