Manchester United players Harry Maguire, Luke Shaw and Lee Grant join Charlie and James in this Soccer Special. This episode unveils the behind the scenes details of what it really takes to keep a footballer fit and focussed.  All three players share their fuelling and recovery strategies, their advice for amateur and aspiring professional footballers and they also reflect on how their careers and performances have been shaped by the development of sports science over the years.  Follow us @scienceinsport on Instagram.   Produced by Astrid Productions for Science in Sport.