In-person training is a mode of education or professional development defined by the physical co-location of instructors and learners within a shared space. As a research concept, it investigates the pedagogical dynamics, learning outcomes, and social interactions inherent in synchronous, face-to-face instructional environments, particularly focusing on the efficacy of direct interaction, hands-on practice, and structured delivery for knowledge acquisition and skill development across various disciplines. Its significance lies in its historical prominence as a primary instructional medium and its unique capacity to facilitate immediate feedback, collaborative learning, and the acquisition of complex practical skills through real-time application.