Last updated at 15:51

Why do we crave certain foods?

To enjoy the CBBC Newsround website at its best you will need to have JavaScript turned on.

Have you ever wondered why you feel like you just can't resist certain foods?

And why do our tummies sometimes overrule our heads when it comes to what we should eat?

Well one of the reasons is to do with cavemen and another is related to what your mum ate before you were born.

Ricky's been finding out more about cravings.