My coloring books and crayons all packed in Mama's bag, that was way back 25 or more years ago. 2015, the fun of coloring is back with "adult coloring books."
I will not argue like experts or therapist does, whether its therapeutic or not. For me coloring brings back my childhood, the time when I do not have to worry for my bills or the orders I need to bake. Coloring books get me into the world of fun where I get to do what I want. The freedom I get makes me better in the end of a very busy day.
I just started with the Secret Garden by Johanna Basford. Done with the first 2 pages, and starting my 3rd & 4th, I may not finish it soon, but the zen I feel every time I sit down and started coloring helps a lot in relieving my day's stress.