Building muscle is one of the most common fitness goals, yet many people don’t fully understand how  muscles actually grow. Muscle hypertrophy may sound like a complicated scientific term, but the concept is straightforward once you break it down. In this guide, you’ll learn what muscle hypertrophy really is, what happens inside your body during strength training, and which key factors influence muscle growth.This is a purely informational, science-based overview —no exaggera