Technically, peanuts are legumes, but since they literally have “nut” in their name and most of us put them in that category anyway, they were included in the study. Turns out, they produced the highest delta response, which can help with immunity, natural healing and deep sleep.

This study comes after others that have found additional health benefits of eating nuts, including potentially contributing to a healthy heart and reducing inflammation.

More: What Are the Health Benefits of Ginger?

“This study provides significant beneficial findings by demonstrating that nuts are as good for your brain as they are for the rest of your body,” Dr. Lee Berk, associate dean for research at the LLU School of Allied Health Professions said in a release.

Of course, a lot of people are allergic to nuts, so if that’s the case for you, you’re going to have to improve your brainwave function in another way. Otherwise, get crackin’!