Thanks to chittle chattle for sharing this link http://www.dailymail.co.uk/health/article-2002862/Why-quilting-uniquely-good-us.html#comments which confirms what we dedicated quilters, embroiderers etc have known all along. Our art/craft or whatever we want to call it is good for us.
I got a nice surprise when I looked at the back. Seeing the quilting in black and white has set me thinking about a winter version. Before I get to that though I have others to finish - why is it always more tempting to start something new than to finish what is on the go?