 For more information, visit underagedrinking.samhsa.gov. Startling and immediate results. That's what people say about Plan Z by Zola. This isn't one of those lose a pound or two a week diets. The average Plan Z by Zola client loses 31 pounds in under 50 days. Hi, this is Zola. We just surveyed a recent group of Plan Z dieters and asked them to write down a word or phrase that describes Plan Z.