Humans have the gene to, and are capable of hibernation. It’s just not active
"Scientists have discovered genes for hibernation in humans. The discovery could pave the way for human hibernation of the kind foreshadowed for astronauts in the 30-year-old film "2001: A Space Odyssey". Human hibernation would make ultralong-haul space travel feasible, with crews effectively put to sleep for months, or even years, by triggering the hibernation genes that man’s distant ancestors used millions of years ago to sleep through hostile winters."