Series 4, Show 7

Jack Osbourne and his celebrity companions continue their quest to seek out the world's biggest adrenaline challenges. He continues to learn how to box in Mexico City's tough gyms with Craig David, presenter Emma Griffiths and Huey from the Fun Lovin' Criminals. Their training involves getting in the ring with a bull, and taking part in an Indian fire ceremony, before their tuition culminates in a fierce bout against a professional opponent.