Dr. Andy Galpin explains the fundamentals of training for muscle growth, focusing on mechanical tension as the primary driver, the “72-hour rule” for stimulating each muscle, why rep ranges from 5 to 30 can produce equal hypertrophy as long as sets are taken within 1 to 3 reps of failure, and how structured progressive overload is the most common missing piece when progress stalls.
Click to view the video: https://www.youtube.com/watch?v=4Xg0osmXufU