The ex-Special Forces soldier talks to Men's Health about leadership, mental resilience, functional fitness and training at 38.

Watch the special forces operator share his tips on strong mental skills, perform the Potential Royal Marines Course (PRMC) fitness test and why he's embraced functional fitness.

From smashing down doors in Afghanistan, to being locked up behind bars, Ant Middleton has fought many wars. Among the mayhem of the moment, or the chaos of everyday life, he has learned to fight each battle where he knows he can always emerge victorious – in his mind.

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