Concurrent training by definition means training for achieving multiple training goals at the same time. Concurrent training in iron game was made popular by Westside Barbell Club and Louie Simmons, who erroneously called it ’conjugate’ (which is a term coined by Yuri Verkhoshanski, a method utilizing delayed training effect and training residuals and other fancy adaptation terms) instead of concurrent. Synonyms with concurrent are parallel and mixed training.