For those lucky enough, planning and then eating a simple snack or massive meal can be an enjoyable experience for all the senses. But why do we get hungry in the first place? And what drives us to want more food, even when we’re full?

In this clip from the BBC’s CrowdScience programme ‘Why do I feel hungry?’, presenter Marnie Chesterton tucks into this surprisingly meaty topic.

Video edited by Samira Choudhury

More from our Psychology of You playlist on BBC Reel: https://www.bbc.com/reel/playlist/mind-control

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