It's the new craze and I love it. I remember as a child loving to color. The smell of a new box of 64 crayons and a new coloring book was one of my favorite presents.
What a wonderful idea to create coloring books for adults. As you are waiting for an appointment or watching TV put down that phone and color.
There are so many out there to choose from. I encourage you to find one that suits you. So get some colored pencils, a good pencil sharpener and get creative.
Here are links to a few of my favorite: