The last time I stepped foot inside a gym for an exercise class was when my first nephew was six months old. His mum corralled me into joining Tae-Bo so she could whip back into her pre-pregnancy shape. What resulted was some hilarious nights, incredible sweats and tests to our pelvic floor, hers and mine – and I was childless at the time. My nephew turns thirteen next month. From his babydays to his now teenage years, I have forgone any exercise that required lycra or appropriate footwear. Time to get my ass into gear – literally and figuratively.