To peel or not to peel. That is the question. Actually, it is one of the first questions you run into as a beginner juicer and one of the most useful juicing tips you'll need to know.

The answer is a little more nuanced than a simple, "PEEL" or "DON'T peel." Some fruits and vegetables should be peeled and some are better with the skins left on.

Here are a few guidelines to follow when deciding whether to peel or not.