Making the weight is one of the toughest challenges that a boxer will face.
Ahead of his IBF world featherweight title eliminator against Joel Brunker on Saturday Welsh boxer Lee Selby is faced with a dilemma.
Food or fight? Belly or belt? Either way, the 5ft 5in Selby cannot weigh more than 9st come the weigh-in.
Watch Sport Wales from 19:00 BST on BBC Two Wales, Friday, 10 October, and on iPlayer, for more exclusive behind-the-scenes footage with Selby