We decide that I have been inside for way too long and decide to go out for lunch. My husband drops me just a little way from Pizza Express while he goes to park the car. I have to negotiate a patch of cobbles, a dipped curb and then (oh My God) two steps into the restaurant. I suddenly feel terribly infirm and exposed on crutches. We have a good lunch but I long for home and when I get back I go to bed and sleep for a couple of hours.