It's amazing, our ancestors most likely had the ability to hibernate
Interestingly, the latest research indicates that we once had it, although we were not the best at it. When a bear wakes up from hibernation, its bones and muscles are practically the same as when it went to sleep, because its body has learned not to eat itself. Instead, a specialized metabolic process comes into play that protects the animals during a prolonged nap, provided they have sufficient supplies in advance. If they fail to do so, they must take into account that hibernation may end badly - rickets, hyperparathyroidism or bone dystrophy are some of the possibilities that, according to the researchers, could also have happened to our ancestors falling asleep for the winter.