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“`html Understanding the Fundamentals of Muscle Building Muscle building, or hypertrophy, is a complex physiological process that involves the growth and strengthening of muscle fibers. At the heart of this process lies the principle of progressive overload, which necessitates gradually increasing the intensity of workouts to continually challenge muscles. Progressive overload drives muscle adaptation, compelling fibers to grow in response to the escalating demands. This adaptation is vital for achieving sustained hypertrophy. Muscle fibers can be categorized into two primary types: slow-twitch (Type I) and fast-twitch (Type II). Slow-twitch fibers are more endurance-oriented and are vital for prolonged activities, relying heavily on oxygen for sustained energy. Conversely, fast-twitch fibers are … 続きを読む