Previous studies have provided support for adult coloring books. Curry and Kasser induced anxiety in a group of undergraduates, provided them either with a blank page, a plaid print, or a mandala ...

Given the popularity of adult coloring books, it’s only natural that other companies are trying their hand, too, including Brazos Bookstore, in Houston, which published 500 copies of its second ...

Coloring Fun: Color By Number This adult coloring app is free for iOS and Android and is full of free images in categories like Fantasy, Mandalas, Cartoon, Animals, and more.

According to a 2020 study involving 120 older adults, 20 minutes of mandala coloring significantly relieved feelings of anxiety compared to plaid pattern coloring, free drawing, and reading.

But if you’re looking for something with a little more edge than the same ol' mandalas and nature scenes, these R-rated adult coloring books might be more your speed. 1. The Scariest Serial ...