Purchase Ben's #1 NEW RELEASE Coloring Calendar 2017: Fractals from amazon between December 1 and December 31 and $2 from each calendar will be donated to ProPublica—journalism in the public interest. Help ProPublica hold those in power accountable while giving your favorite math geek a fun holiday gift that will last all year!

Can coloring actually lower your anxiety levels? As it turns out, YES, according to the Journal of the American Art Therapy Association. Nancy A. Curry and Tim Kasser come to the conclusion "that structured coloring of a reasonably complex geometric pattern may induce a meditative state that benefits individuals suffering from anxiety."