Compound in bears’ blood that helps them retain muscle during hibernation could help humans gain muscle too! Amazing research, 2022 Posted on July 31, 2022 By Charlielikes Why is it that bears able to sleep for an entire winter and not lose their muscle mass, but just a few weeks away from the gym will make us begin to… Fitness Tags:amazing, bear’s, compound, during, fitness, health, hibernation, humans, muscle, research,, retain