Walking is the one of the most under-prescribed medicines in the world according to foot mechanics expert Dr Courtney Conley, who tells Harry Bullmore exactly how many daily steps are needed for various benefits. “Walking should be on every doctor’s prescription pad”, says Dr Courtney Conley, co-author of a new book Walk: Your Life Depends On It . “It is the panacea of medicine.” Her co-author, physiotherapist Dr Milica McDowell, likens walking to eating, sleeping, brushing your teeth and even