I was surprised at the number of responses to my first post and the speed with which they appeared. Thank you all for your advice and encouragement. I shall follow up the link about running pants but the suggestion of a skirt over tights is a step too far for this neighbourhood. Before starting to attempt to run, I went to a specialist shop and received advice about shoes from an assistant who runs half marathons. The shoes I bought have been excellent and taken away my fears about knee problems (though stair climbing is nowhere near brisk on the day after a run). I started the programme in May and have repeated each week's runs until the last two weeks, which I completed only once. I remain astonished that I have progressed from the first week, when I was willing the 60 seconds to end soon, to a stage when I can run (albeit at a funereal pace) for almost 30 minutes, not without strain and constant complaining to Laura, and even simulate real running over the last couple of minutes - and at an age when being on a couch is expected and not considered a sign of lethargy.