Whole30 is known for being tough. The 30-day elimination diet ditches all grains, legumes, added sugars, and processed foods, and instead emphasizes eating fruits, vegetables, meat, and fish. It's basically the definition of restrictive, and, as anyone who's tried it can tell you, it can to be hard to find recipes for.

That's why, if you're considering trying Whole30, it's super important to do some research before you get started. Read up on tips from people who've been through it more than once, bookmark as many Whole30-friendly food blogs as you can find, and try to get your hands on one or two comprehensive cookbooks.

Not sure which cookbooks to swing for? Luckily, we did the research for you there. These nine titles contain pretty much every recipe you're going to want or need over the course of 30 days. A couple of them were actually written by the founders of Whole30, so they're as legit as it gets. The rest focus more on Paleo recipes, which, aside from a few exceptions, are mostly Whole30-compliant. And all of them are filled with great recipes, whether you're doing Whole30 or not. So you can totally keep cooking them when your 30 days are up.