How Does Hibernating Save Energy?

What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. How does hibernating save energy?

The Big Idea

In winter, food is hard to find. Some animals just go to sleep for months. That trick is called hibernation!

Slow Everything Down

Step one: slow everything down. Some animals, like ground squirrels, hibernate in winter when food is hard to find. Their body temperature drops close to freezing, and their heartbeat and breathing slow way down.

Save Energy

Step two: save energy. This uses far less energy than staying awake. They live off fat stored during summer.

Wake Briefly

Step three: wake briefly. Every few weeks they warm up briefly. Then they drop back into deep sleep.

A Closer Look

Let's take a closer look! The squirrel curls up. Its heartbeat slows way down. It lives on stored fat. It wakes up now and then.

Quick Facts

Quick facts! A hibernating ground squirrel's heart may beat only a few times a minute. Its body temperature drops close to freezing. It lives on fat stored during summer. Every few weeks it warms up briefly and then sleeps again.

Think Like a Scientist

Now, think like a scientist! Draw two heartbeat charts. Make one for an awake squirrel. Make one for a hibernating squirrel. Use different line heights to show the difference. Keep asking why, and keep exploring!

Outro

Hibernating animals save energy by cooling their bodies and slowing their hearts, then living on stored fat all winter. It is a clever way to get through a cold winter with very little food. Science is amazing! Keep wondering and keep exploring! Share what you learned with someone at home, and see what they think! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!