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Series 1, Show 1

Episode number: 1

Overview: Follows Jack through daily five-mile runs, six-hour training sessions, fasting and enemas during an intense stay at a sweltering Muay Thai boxing camp near Bangkok.

Series 1, Show 2

Episode number: 2

Overview: Kelly Osbourne visits her brother in Spain to watch him risk his life running with the bulls in Pamplona. Jack also confronts his tear-inducing phobia of heights during a training session in the French Alps.

Series 1, Show 3

Episode number: 3

Overview: Tensions mount as Ozzy and Sharon watch their son quiver his way up the jagged rockface of California's El Capitan mountain.