Tanya Sweeney: I’ll never be a size 8 again, and I don’t care how I look naked – my desire to move more and eat well is now finally rooted in health, not looks

About 15 years ago, I enlisted the services of a personal trainer. I say ‘enlisted’, but what more accurately happened was an editor asked if I wanted to write a ‘drop a dress size for Christmas’ feature, and I figured that holding myself accountable in a national newspaper might keep me on track, drop-wise.