Mental strength is crucial in combat sports because it enables athletes to push through pain, stay focused under pressure, and maintain composure during critical moments. Fighters like Mike Tyson and Khabib Nurmagomedov excelled not just due to their physical abilities but also their mental resilience—mastering self-belief, focus, and emotional control. Developing mental toughness helps fighters manage anxiety, rebound from adversity, and outlast opponents who may have superior physical skills. It's the difference between winning and losing in high-pressure situations.