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Sonja McLaughlan and Tom Fordyce investigate what some people in the game are calling an injury "epidemic". What toll is the game taking on player's bodies as the collisions get harder? And how do the club's manage their players in an increasingly congested calendar? We'll hear from players, coaches and the Lions Head of Medicine Dr Eanna Falvey.

Plus, a look ahead to the opening games of this year's European Champions Cup which starts this weekend. Download more rugby union analysis and debate in the 5 live Rugby Union Weekly Podcast - bbc.co.uk/podcasts/5live.