Novelist Nikesh Shukla started to learn to box after a racist incident on a train left him feeling vulnerable and needing to learn how protect himself. In the last of his three interviews exploring the sport - and getting personal advice - he speaks to criminologist Dr Deborah Jump. She left her desk at Manchester Metropolitan University to do an ethnographic study - immersing herself into the world of boxing to research it from the inside. She wanted to investigate whether boxing gyms help reduce offending among young people. Her research made her fitter but gave her some food for thought.