We go behind the scenes at Manchester City to reveal the cutting-edge techniques keeping players at peak fitness, as the women’s team prepare for the local derby against Manchester United. Tim Samuels follows Scotland international Caroline Weir across the day to see what paces she’s put through (and exactly what she eats). He also hears from City legend Paul Lake, once tipped as a future England captain, on how today’s methods might have saved his career from devastating injury. For extra content, videos and a regular newsletter go to www.bbc.co.uk/allhailkale