Everyday we go through the same routine, wake up and feel hunger, then eat and feel satisfied only to feel hungry again in a few hours so the routine repeats. 

Obviously there is a good reason for this, but how does the body know when we need food and whenever we have had enough? 

This highly informative and interesting video by TedEd will help answer these questions and a whole lot more! 

After you watch the video, leave a comment below to let me know what you thought!