There have been isolated cases of modern humans surviving by hibernation, but almost always in association with some kind of serious injury that seems to trigge

There have been isolated cases of modern humans surviving by hibernation, but almost always in association with some kind of serious injury that seems to trigger some deeply buried metabolic mechanisms. https://www.theguardian.com/world/2006/dec/21/japan.topstories3 https://www.theguardian.com/world/2006/dec/21/japan.topstori... There was some work around a decade ago into using precise concentrations of hydrogen sulfide to induce it deliberately.