Can the boxing gym be recognised as an effective space for supporting desistance? Exploring the psychosocial manifestations of boxing, this enlightening study reviews conflicting evidence to determine boxing's place in the criminal justice system. Drawing upon the empirical insights, with case studies of participants' backgrounds and their motivations for taking up the sport, Jump measures the value of the discipline, as well as the respect and fraternity that some claim boxing provides for young men. This is a perceptive addition to the debate about sport's role in criminal desistance that delves deep into themes of masculinity and violence. 'Jump's text raises some important questions about 'how' boxing is meant to help with violent crime, and the limitations of just funnelling violence into a specific environment without the ability to transform it.' – Ephemeral Digest 'Deborah Jump presents unique insights that challenge previous thinking on the transformational potential of boxing for violent men. This is a first-rate book; a must-read for anyone interested in life-course criminology, gender, sport and criminal desistance.' – Ross Deuchar, University of the West of Scotland 'This book has some great stories from the inside. Jump offers a detailed critique and makes the case for changing masculinities and transformations in the dynamic relationship between boxing and criminal behaviour.' – Kath Woodward, The Open University