Thread: Make a master sheet

Hi,
First of all, Here is a picture of my worksheet
http://i142.photobucket.com/albums/r...lnutrition.jpg

As you can see, this is a nutrition plan I've put together, each sheet represents 1 day and each week I have a summary page
(+ a summary page for the month at the end). So what I need help with is this: I want my day 1 sheet to be a main sheet,
meaning, if i change something in it I want my other sheets to also change(for example if i add another food i want it to appear in the other sheets).

Looking for an easy way to do this

If anything is unclear, please let me know.