In a converted warehouse on a nondescript Feltham industrial estate, the one-time Premier League hotshot takes a deep breath, focuses his mind and begins the next gruelling set of reps.
This is not your ordinary gym. There's no plasma televisions, fruit smoothies, motivational posters or sympathy here.
Just racks of impossibly heavy weights, some scary-looking straps and harnesses, thick ropes and, for reasons that aren't entirely clear, a sledgehammer.
'You've got to be prepared to put yourself on the pain threshold and make the pain threshold go higher!