The show documents Osbourne running with the bulls in Pamplona, Spain, following a strict exercise regimen, Muay Thai training in Thailand, and "an overall 180-degree mental make-over".

The programme airs on ITV2 in the UK, and was repeated on ITV late at night. It's also shown on MuchMusic in Canada, and on the Travel Channel in the United States.

In the first episode of the new series Jack is joined by sister Kelly and parents Sharon and Ozzy, as the Osbournes take part in a family adventure Adrenaline Junkie style.

"My parents are out here and they're both really old - but I'm looking forward to trying to get them stuck in," said Jack about the Las Vegas get -ogether.

Jack will be accompanied a variety of stars this year. Hollywood heartthrob Jesse Metcalfe joins Jack along with Joanna Page (Stacey from Gavin and Stacey) and Radio 1 DJ Reggie Yates in New Zealand and Dubai.

Also taking on Jack's challenges in the series are singer Natalie Imbruglia, Lord of the Rings actor Billy Boyd and presenter Konnie Huq.

• Official website (Celebrity)
• Wikipedia
• 'Adrenaline Junkie' at itv.com
• 'Adrenaline Junkie' at ginger.tv
• 'Adrenaline Junkie' at Unrealitytv.co.uk

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