In this film, Brian O’Driscoll proves just what it takes to prepare a body for the gruelling test of the HSBC World Rugby Sevens Series. The ‘Death Zone’ pre-season training session undertaken by England Sevens is one of the most brutal training regimes in sport.

Brian O’Driscoll put his rugby boots on for the first time since retirement to experience first-hand how Rugby Sevens players prepare themselves for the punishing physical challenge of a HSBC World Rugby Sevens Series Game.

The ‘Death Zone’, a title borrowed from a term climbers use to describe the altitude at which breathing is almost impossible and even the simplest of tasks become impossible to complete, is a session designed to force the players to make decisions and perform skills in game situations whilst under extreme fatigue.

The session is used by the England Sevens team to put their body under the extreme stress that it will experience during a game of Rugby Sevens.