Humans lose muscle when we don't use it, but squirrels can gain muscle during winter hibernation -- thanks to their gut bacteria. Learn more in this episode of BrainStuff, based on this article: https://animals.howstuffworks.com/mammals/squirrels-get-jacked-during-hibernation-news.htm
Learn more about your ad-choices at https://www.iheartpodcastnetwork.com

How Did One Portuguese Diplomat Save Thousands of Holocaust Refugees?
10:21

How Do Search-And-Rescue Dogs Work?
10:52

BrainStuff Classics: Why Do We Drop a Ball on New Year's Eve?
05:17