While it’s unclear exactly where the adage “feed a cold; starve a fever” got it’s start, it may have something to do with the fact that many people have a diminished appetite when they have a fever. But there’s actually little medical evidence to support the saying.

Instead, try to eat as normally as possible when you’re under the weather, and be sure to stay well-hydrated.

Find out which other health sayings are true and which are just old wive’s tales.