Sergeant Tom Merriman, a serving Royal Marine Commando and Physical Training Instructor (PTI) who has trained some of the biggest names in British rugby league and union.

He helps us tackle the debate over the use of military boot camps for sport head on: do they build mental toughness and team cohesion? Or should teams focus on the demands of the sport? We also delve into the Commando Ethos and the qualities Royal Marines abide by to demonstrate resilience under extreme stress and adversity.

Sgt. Merriman has delivered Commando style training to a number of the biggest and most successful clubs in British rugby league and rugby union. He shares what he learned along the way as well as some of the anecdotes from working with those teams, including reigning champions the Wigan Warriors and Warrington Wolves under talismanic head coach, Sam Burgess.

Sergeant Tom Merriman maintains an Instagram account where he provides advice for potential recruits looking to prepare physically and mentally for a career in the Royal Marines. He can be found at @thecommandopti