In this series we explore #TheToughest lives of GAA athletes and how they compare to their professional counterparts across the world. With only one way to find out, RTÉ, partnering with AIB, have drafted in ex-NFL Star, Roberto Wallace, and former England cricketer fast bowler Steve Harmison to put this theory to the test. The pair of professional sportsmen are set to trade places with Mayo All Star Aidan O'Shea and Tipperary hurler Brendan Maher, who will in turn be temporarily transferring to a premier Australian Cricket Club and the world of NFL respectively.