>>12209961All you need to do is increase the urea and sugar in the blood to sufficient levels until it forms glycogen. Then you slowly freeze the body and then when you wish, defrost it and if it should come out with the consistency of a dead fish. At which point you electrocute it, quickly before it passes away.
-frogs have a small electrical cell group that brings them back quickly, humans would require an electric defibrillator, although there have been cases where residual activity has caused respiration to restart, shock would be more certain-
It was first observed as possible in humans when some poor bastard turned himself into a popsicle in the middle of a winter storm, didn't pee, and froze most of his extremities after drinking liters of a sweet soda drink.
Somehow he didn't damage his most important extremities.
https://www.dailymail.co.uk/news/article-2103339/Swedish-man-Peter-Skyllberg-survives-frozen-car-months-eating-handfuls-snow.html#:~:text=Peter%20Skyllberg%2C%2044%2C%20had%20eaten,after%20temperatures%20plunged%20to%20%2D30C.