what does this expression really mean?!
Question: What does this expression really mean?
Answers:
The expression is usually "Feed a cold, starve a fever". The phrase is from Chaucer in "The Canterbury Tales." In Middle English, the phrase was "Fede a cold and starb ob feber".
It is thought by some that fasting during a fever helps lower body temperature, while eating plenty of food helps raise it, thus helping to fight off a cold. But there is little evidence supporting either of these claims.
Yes it is an expression. An old wives tale. I do not think any of that has been proved scientifically.
It is an old wive's tale, it's not true.