I started running to impress my neurologist. I downloaded the little app, where Jo Whiley would cheer me on across the weeks, and I put on a T-shirt and some homely trainers, and chucked myself out of the door. And adorably, I continued to do so every other day, even after I’d told my neurologist, twice, even after I’d completed the app – instead, I listened to podcasts about for example, “What this smalltown US police department did wrong,” and “Hey, did you know some people can smell dementia?” and, while I sweated my way past the allotments and up to the lake, “Let me tell you about this lady from the olden days – boy did she have chutzpah!”