My sister, who is also a highly regarded environmental psychologist, recently wrote asking me if yang therapy was just for boys. I replied: "Though men and women have different yin/yang balances as do individuals there is an element of interpretation at work here. For example shopping for an expedition feels much more yang than doing the weekly tesco run- but the activity is the same. Men may love being asked to fix broken bookshelves but loathe having to vacuum the house- but both are just household tasks. Can you con yourself into yanging up the yin? maybe- up to a point. Whether you are male or female, if you feel you need more yang in your life then you probably do."