Layout is a pretty vast topic. So I will be breaking it up over the next few days just like the color wheel. Always try and maintain the same size body text for all your articles. It lends itself to the overall editorial. Imagine if you were reading a magazine and every paragraph was a different size than the one before. The eye would not flow through it as easily as if they were the same size. However, the only possible time you should break this rule is for special editorial pages that you want to distinguish from the rest (such as a feature). What happens if your body text doesn’t fit on the page? Well it depends. You can get away with changing some letters by changing their Vertical and Horizontal scale by no more than 3%. You should also adjust the leading, kerning, columns, and sometimes reword some things. If it still does not fit, you might just need to rework your layout in a way where it does.