again i'm mostly agreeing but i think that craft and creative acativites have a theraptic value aside form exercise and being better than not doing anything. I think that self-expression and prodictivey/sense of acivemnt are healing of themselves. And there's the medatiative nature of many crafts (knitting is a partciulary good one for that compaired with say using a sewing machine) and potentail social links that can be made through craft.
That's why i'm inrested in art and other creative/expressive therapys. One of the most helpful things i had form the NHS was a short Dance-Movemnt therapy group (3 blocks of 8 weeks)