"Resistance training produces hypertrophy at any age Citing research studies, the speaker notes that the oldest individual documented to show significant muscle hypertrophy in a controlled study was 89 years old, and states: "As far as I'm aware, there is no population that I know of where resistance training does not, with sufficient intensity, produce hypertrophy." This directly refutes the widespread belief that it is "too late to start" — a myth the speaker encounters even from 30-year-olds who have convinced themselves their best years are behind them. Source: Lane Norton, Forever Strong Experience, Nutrition and Body Composition Episode"