At the end of the last century, Alexander Karelin petrified heavyweights on the mat. Instilling fear with his sheer presence, he remained undefeated for a whole decade and even ventured into MMA. Dubbed 'The Madman' by Americans for his ruthless training and 'The Experiment' for possessing superhuman strength, the Siberian titan forced a change in the rules to give others a fighting chance. Today, we will walk in the footsteps of the 'Russian Bear,' one of the greatest athletes across all sports and eras